| a diphtheroid stomatitis of chickens apparently due to a spirillum, spirillum pulli, species nova. | | 1956 | 13362786 |
| electron microscopy of ultrathin sections of spirillum serpens. | | 1957 | 13405862 |
| studies on the isolation of spirillum sputigenum. | | 1957 | 13460815 |
| nuclear fusion in spirillum spp. | | 1957 | 13481311 |
| some observations concerning the presence of spirilla in the fundic glands of dogs and cats. | | 1958 | 13559622 |
| [surface structure & flagella of spirilla]. | | 1958 | 13616590 |
| prevention of borrelia duttonii, trypanosoma gambiense, spirillum minus and treponema pallidum infections conveyable through transfusion. | | 1958 | 13653844 |
| observations on spirillum sputigenum and its relationship to selenomonas species with special reference to flagellation. | | 1959 | 13654218 |
| identity of the so-called vibrios of the oral flora. | | 1959 | 13654235 |
| spirillum fever; report of a case and review of the literature. | | 1961 | 13753697 |
| electron microscopy of flagellation in species of spirillum. | | 1961 | 13785467 |
| cellular structure of large spirilla. | | 1960 | 13801028 |
| spirillum serpens meningitis. report of a case. | | 1960 | 13819393 |
| cell elongation and division in spirillum anulus. | | 1959 | 13844899 |
| chromatin patterns in spirillum anulus. | | 1959 | 13844900 |
| [bacterial growth at low substrate concentration]. | | 1963 | 13957378 |
| [bacterial intracytoplasmic organelles and the site of oxidation-reduction activity]. | | 1962 | 13996218 |
| electron microscopic and bacteriologic studies of spirilla isolated from the fundic stomachs of cats and dogs. | | 1962 | 14005438 |
| extracellular accumulation of pyrroles in bacterial cultures. | aerobacter aerogenes, paracolobactrum aerogenoides, spirillum serpens, and gelatinous strains of chromobacterium violaceum produced an extracellular, ether-soluble, ehrlich-positive substance when grown in media prepared with gelatin hydrolysate. the substance has been tentatively identified as pyrrole-2-carboxylic acid. both hydroxy-l-proline and allo-d-hydroxyproline have been shown to be precursors of the material. gelatinous strains of chromobacterium violaceum, but not the other positive cu ... | 1963 | 14023126 |
| [bacterial growth at low substrate concentration]. | | 1963 | 14028703 |
| a systematic study of the genus spirillum which occurs in oxidation ponds, with a description of a new species. | | 1963 | 14058990 |
| a method for the purification of bacterial flagella by ion exchange chromatography. | | 1963 | 14072828 |
| membrane stability and salt tolerance in gram-negative bacteria. | | 1963 | 14076708 |
| [displacement of bacterial "spores": in spirillum praeclarum and during their liberation]. | | 1963 | 14102049 |
| thermal transition of spirillum serpens flagella. | | 1964 | 14187396 |
| [comparative study of large spore-forming spirilleae: sporospirillum (spirillum) praeclarum (collin) n.g., sporospirillum gyrini n. sp. and sporospirillum bisporum n.sp]. | | 1964 | 14196631 |
| microbial ecology of activated sludge. i. dominant bacteria. | over 300 bacterial strains were isolated from seven samples of activated sludge by plating on sewage agar. gram-negative bacteria of the genera zoogloea and comamonas predominated. many isolates (51%) showed sudanophilic inclusions of poly-beta-hydroxybutyric acid, whereas 34% accumulated iodophilic material on media containing starch. a large number required either vitamins or amino acids, or both, for growth. none of the isolates tested for their ability to bring about changes in autoclaved se ... | 1964 | 14215970 |
| [antagonism between trypanosoma cruzi and spirillum minus]. | | 1964 | 14237579 |
| characterization of poly-beta-hydroxybutyrate extracted from different bacteria. | lundgren, d. g. (syracuse university, syracuse, n.y.), r. alper, c. schnaitman and r. h. marchessault. characterization of poly-beta-hydroxybutyrate extracted from different bacteria. j. bacteriol. 89:245-251. 1965.-poly-beta-hydroxybutyrate (phb) from different bacterial genera was studied with regard to its crystal structure, infrared absorption, intrinsic viscosity, and electron microscopy. all phb samples precipitated from dilute chloroform solution gave identical x-ray diffractograms confir ... | 1965 | 14255672 |
| lysis of bacterial cell walls by an enzyme isolated from a myxobacter. | ensign, j. c. (university of illinois, urbana), and r. s. wolfe. lysis of bacterial cell walls by an enzyme isolated from a myxobacter. j. bacteriol. 90:395-402. 1965.-an exoenzyme which lyses intact cells, heat-killed cells, and cell walls of arthrobacter crystallopoietes was purified 60-fold from the growth liquor obtained from a myxobacter (strain al-1). the lytic enzyme was produced during growth of the organism in a number of complex media, the maximal amount of enzyme being produced in yea ... | 1965 | 14330733 |
| the location of the mucopeptide in sections of the cell wall of escherichia coli and other gram-negative bacteria. | | 1965 | 14346132 |
| studies on spirillum minus infection; with particular reference to the passage of the organism through filters. | | 1955 | 14364477 |
| [pathogenesis and control of infectious periodontitis]. | | 1955 | 14372924 |
| spirillum mancuniense n. sp. | | 1955 | 14392308 |
| the growth of spirillum volutans ehrenberg in mixed and pure cultures. | | 1962 | 14492512 |
| [oxidative stress and antioxidant cell protection systems in the microaerophilic bacterium spirillum winogradskii]. | the influence of oxygen availability during cultivation on the biosynthetic processes and enzymatic activities in the microaerophilic bacterium spirillum winogradskii d-427 was studied, and the roles played by different systems of the defense against oxidation stress were determined. the metabolic adjustments caused by transition from microaerobic (2% o2) aerobic conditions (21% o2 of the gas phase) were found to slow down constructive metabolism and increase synthesis of exopolysaccharides as a ... | 2003 | 14679896 |
| characterization of bioluminescent derivatives of assimilable organic carbon test bacteria. | the assimilable organic carbon (aoc) test is a standardized measure of the bacterial growth potential of treated water. we describe the design and initial development of an aoc assay that uses bioluminescent derivatives of aoc test bacteria. our assay is based on the observation that bioluminescence peaks at full cell yield just prior to the onset of the stationary phase during growth in a water sample. pseudomonas fluorescens p-17 and spirillum sp. strain nox bacteria were mutagenized with luxc ... | 2004 | 14766564 |
| studies on the metabolism of photosynthetic bacteria. vii. comparative studies on the photoproduction of h2 by rhodo-pseudomonas gelatinosa and rhodo-spirillum rubrum. | | 1951 | 14824100 |
| a comparative study of the light and dark fermentations of organic acids by rhodo-spirillum rubrum. | | 1951 | 14824109 |
| antagonism of spirillum minus infection in rats towards trypanosoma lewisi and t. equinum. | | 1951 | 14863953 |
| repeated recovery of a spirillum by blood culture from two children with prolonged and recurrent fevers. | | 1951 | 14864001 |
| production of herxheimer-like reactions in rabbits with spirillum minus infections by administration of penicillin or immune serum. | | 1951 | 14878088 |
| the susceptibility of spirillum minus and borrelia duttoni to streptomycin and penicillin. | | 1952 | 14944183 |
| [experiments in the culture of spirilla and certain pathogenic protozoa in the isolated cheek pouch of the golden hamster]. | | 1952 | 14951512 |
| assessment of toxicant activity in sediments by the echa biocide monitor. | the echa biocide monitor, a dipstick procedure originally designed to test the effectiveness of in situ biocides, was evaluated as a possible environmental toxicity assessment procedure. the dipstick procedure was applied to 94 sediment extracts which were also tested by three well documented toxicant screening procedures; microtox, daphnia magna and spirillum volutans. in these samples the daphnia magna test proved to be the most sensitive indication of toxicant activity (63 of 94) with the ech ... | 1989 | 15092462 |
| ftsz collaborates with penicillin binding proteins to generate bacterial cell shape in escherichia coli. | the mechanisms by which bacteria adopt and maintain individual shapes remain enigmatic. outstanding questions include why cells are a certain size, length, and width; why they are uniform or irregular; and why some branch while others do not. previously, we showed that escherichia coli mutants lacking multiple penicillin binding proteins (pbps) display extensive morphological diversity. because defective sites in these cells exhibit the structural and functional characteristics of improperly loc ... | 2004 | 15466028 |
| proposals of curvibacter gracilis gen. nov., sp. nov. and herbaspirillum putei sp. nov. for bacterial strains isolated from well water and reclassification of [pseudomonas] huttiensis, [pseudomonas] lanceolata, [aquaspirillum] delicatum and [aquaspirillum] autotrophicum as herbaspirillum huttiense comb. nov., curvibacter lanceolatus comb. nov., curvibacter delicatus comb. nov. and herbaspirillum autotrophicum comb. nov. | two strains of curved bacteria, 7-1(t) and 7-2(t), isolated from well water, were phylogenetically examined to determine their taxonomic position. strain 7-1(t) is a gram-negative, slightly curved rod. analysis of the 16s rrna gene sequence showed that strain 7-1(t) formed a cluster with [aquaspirillum] delicatum and [pseudomonas] lanceolata. it has some similar characteristics to [a.] delicatum and [p.] lanceolata, but has sufficient distance to separate it from other genera. dna-dna hybridizat ... | 2004 | 15545462 |
| [characterization of microbial population present in the edible seaweed, monostroma undulatum, wittrock]. | the microbiological quality of monostroma undulatum, wittrock from the southern argentinean coast, was studied for its application for human food. also the diversity and function of the native bacterial population to this green seaweed was analyzed. samples were collected in puerto deseado, province of santa cruz, southern argentina (47 degrees 45'l.s., 65 degrees 55'l.w). the samples were analyzed for the presence of psycotrophic heterotrophic bacteria, marine heterotrophic bacteria, low nutrit ... | 2004 | 15807211 |
| bacterial diversity in the bacterioneuston (sea surface microlayer): the bacterioneuston through the looking glass. | the bacterioneuston is defined as the community of bacteria present within the neuston or sea surface microlayer. bacteria within this layer were sampled using a membrane filter technique and bacterial diversity was compared with that in the underlying pelagic coastal seawater using molecular ecological techniques. 16s rrna gene libraries of approximately 500 clones were constructed from both bacterioneuston and the pelagic water samples and representative clones from each library were sequenced ... | 2005 | 15819854 |
| [the functional role of reduced inorganic sulfur compounds in the metabolism of the microaerophilic bacterium spirillum winogradskii]. | oxidation of reduced sulfur compounds by microaerophilic sulfur bacterium spirillum winogradskii was found to occur only concomitantly with consumption of an organic substrate and was not linked to their utilization as electron donors in energy metabolism. no enzymes of dissimilatory sulfur metabolism were found in the cells of the sulfur bacterium oxidizing thiosulfate to tetrathionate; oxidation of thiosulfate and sulfide was caused by their reaction with reactive oxygen species (ros), mostly ... | 2005 | 15835774 |
| new method for assimilable organic carbon determination using flow-cytometric enumeration and a natural microbial consortium as inoculum. | the concentration of easily assimilable organic carbon (aoc) largely determines the microbiological stability of drinking water. however, aoc determination is often neglected in practice due to the complex and tedious nature of the conventional bioassay. the three major drawbacks of the conventional method are (1) a long assay time of 9-12 days, (2) the use of a labor-intensive enumeration technique (plating on growth media), and (3) limited information supplied by the use of selected pure cultu ... | 2005 | 15926580 |
| isolation and characterization of sulfurospirillum carboxydovorans sp. nov., a new microaerophilic carbon monoxide oxidizing epsilon proteobacterium. | a new microaerophilic, gram-negative, motile, 2-3 microm long and 0.3 microm wide, vibrioid to spirillum-shaped, co oxidizing bacterium, designated strain mv, isolated from marine sediment (the north sea) is described. strain mv was able to couple the oxidation of co to the reduction of elemental sulphur, dmso and thiosulphate. growth occurred with up to 100% (v/v) co in the headspace. acetate was needed as carbon source. no growth on co was observed with nitrate and selenate as electron accepto ... | 2005 | 15928986 |
| membrane-associated components of the bacterial flagellar apparatus. | at the position of insertion of the flagellum into the gram-negative bacterial cell envelope, a specialized membrane differentiation has been observed by electron microscopy. this structure, termed concentric membrane rings, is harboured on the under-side of the outer membrane of spirillum serpens, and forms a plate-like array of up to seven rings (diameter 90 nm) and an interior supporting collar. the concentric membrane rings are sensitive to proteolytic digestion, but are lysozyme and phospho ... | 1977 | 16250341 |
| methods for growing spirillum lipoferum and for counting it in pure culture and in association with plants. | methods are described for growing spirillum lipoferum in quantities sufficient to serve as inoculant in field trials of its associative n(2)-fixing ability with higher plants and as a source of cells for the preparation of nitrogenase, cytochromes, respiratory enzymes, etc. a heavy inoculum of s. lipoferum grown on nh(4) was transferred to a medium of minimal nitrogen content, and initial rapid growth at the expense of residual combined nitrogen was replaced later by slower growth on n(2). conve ... | 1977 | 16345192 |
| nitrogen-fixing (acetylene redution) activity and population of aerobic heterotrophic nitrogen-fixing bacteria associated with wetland rice. | nitrogen-fixing activity associated with different wetland rice varieties was measured at various growth stages by an in situ acetylene reduction method after the activities of blue-green algae (cyanobacteria) in the flood water and on the lower portion of the rice stem were eliminated. nitrogen-fixing activities associated with rice varieties differed with plant growth stages. the activities increased with plant age, and the maximum was about at heading stage. the nitrogen fixed during the whol ... | 1979 | 16345379 |
| nitrate dissimilation under microaerophilic conditions by a magnetic spirillum. | during microaerophilic growth of magnetic spirillum ms-1 on tartrate and nitrate, a maximal cell density was obtained at an initial oxygen partial pressure of 17 pa. a transient accumulation of nitrous oxide and a 1:2 (mol/mol) stoichiometry between tartrate oxidation and nitrate reduction were observed, indicating that the organism carried out a respiratory type of metabolism. | 1980 | 16345620 |
| the microaerophile spirillum volutans: cultivation on complex liquid and solid media. | spirillum volutans grows only under microaerobic conditions in a peptone-succinate-salts broth, but can grow aerobically when the peptone is replaced by vitamin-free acid-hydrolyzed casein broth. the addition of potassium metabisulfite, norepinephrine, catalase or superoxide dismutase (sod) permitted aerobic growth in peptone-succinate-salts broth. a combination of catalase and sod had a synergistic effect. s. volutans lacked catalase and had only a low level of peroxidase activity, but did poss ... | 1982 | 16345953 |
| detection of industrial pollutants and toxic chemical wastes in sewage treatment plant influents by use of a biological monitor. | heterogeneous mixtures of toxic chemical wastes affecting the normal operations of a sewage treatment facility employing anaerobic digestion were detected by dark-field observation of uncoordinate flagellar orientation patterns displayed by cells of spirillum volutans. these results were compared with plant parameters determined by gas production, volatile fatty acids, and alkalinity measurements. | 1983 | 16346224 |
| substrate utilization by an oxalate-consuming spirillum species in relation to its growth in ozonated water. | the nutritional versatility of a vibrio-shaped, oxalate-utilizing isolate, strain nox, obtained from tap water supplied with low concentrations of formate, glyoxylate, and oxalate, was determined by growth experiments with low-molecular-weight carbon compounds at high (grams per liter) and very low (micrograms per liter) concentrations. the organism, which was identified as a spirillum species, appeared to be specialized in the utilization of a number of carboxylic acids. yields of 2.9 x 10 cfu/ ... | 1984 | 16346493 |
| bacterial florae in larvae of the lake fly chironomus plumosus. | chironomus plumosus midge larvae were collected from lake winnebago, wisconsin, for 10 weeks in the summer of 1985 and 10 weeks in the summer of 1986 in order to determine their bacterial floras. altogether, 18 genera and 29 species of bacteria were found and identified. some spirillum-like bacteria which were not isolated in culture were found by electron microscopy. scanning electron micrographs of sectioned larvae revealed bacteria throughout the intestines. gram-positive organisms were most ... | 1993 | 16348917 |
| spirillum virginianum nov. spec. | | 1926 | 16559199 |
| the genus spirillum ehbg. with special reference to cell inclusions and the chromidial theory. | | 1940 | 16560346 |
| ultracentrifugation and cytology of spirillum volutans. | | 1942 | 16560598 |
| the flagella of spirillum volutans. | | 1949 | 16561638 |
| cultivation of spirillum volutans in a bacteria-free environment. | | 1965 | 16562086 |
| purines as growth requirements of spirillum serpens. | | 1942 | 16578049 |
| characteristics of biofilm community formed in the chlorinated biodegradable organic matter-limited tap water. | the aim of this study was to characterize the influence of free chlorine residual on biofilm formation in a chlorinated system in which the biodegradable organic matter (bom) was limited. the biofilm community was characterized through a community-level physiological profile (clpp) that was generated using the biolog gn microplate-based community-level assay. the chlorinated system was run at chlorine residual concentrations of 0.3, 0.5, and 1.0 mg l(-1) with the provision of bom-limited tap wat ... | 2006 | 16583822 |
| potential for nitrogen fixation in maize genotypes in brazil. | n(2) fixation in field-grown maize (zea mays l.) plants was estimated by a nondestructive acetylene reduction method which permitted the plants to continue growing and produce seeds. samples from six areas revealed mean nitrogenase activities of 74-2167 nmol of c(2)h(4)/(g of dry roots x hr) for 10 plants. among 276 s(1) lines planted in two field experiments, 17 lines were selected for further nitrogenase activity assays after prescreening. variability within lines was high but significant diff ... | 1975 | 16592251 |
| effects of light and temperature on the association between zea mays and spirillum lipoferum. | zea mays was grown on a low n nutrient solution under 16 conditions of light and temperature in a crossed-gradient room in an attempt to determine whether or not variation in climatic conditions influences n(2) fixation by the association between maize and spirillum lipoferum. temperatures were 28, 32, 36, and 40 c and 10 c lower at night; light intensities were 500, 1,250, 2,400, and 3,000 ft-c. plants harvested after 94 days showed no significant benefit from association with s. lipoferum eith ... | 1977 | 16660131 |
| [two new species of microaerophilic sulfur spirilla, spirillum winogradskii sp. nov. and spirillum kriegii sp. nov]. | new microaerophilic sulfur-oxidizing spirilla were isolated from hydrogen sulfide sludge of wastewater treatment plants. strains d-427 and d-430 have spiral cells that are highly motile due to bipolar flagellum bundles covered with mucous sheaths. under a phase-contrast microscope, these bundles are visible as single polar flagella. spheroplasts are formed in the stationary growth phase. both strains are obligate organotrophs able to oxidize a number of reduced sulfur compounds. the oxidation of ... | 2006 | 16758869 |
| isolation and characterization of dechlorospirillum anomalous strain jb116 from a sewage treatment plant. | the dissimilatory perchlorate reducers mainly belong to two monophyletic groups, viz. dechloromonas and azospira in the beta subclass of proteobacteria. the present study describes isolation and genetic characterization of dechlorospirillum anomalous strain jb116 that belongs to alpha subclass of proteobacteria. the strain jb116 was isolated under facultative anaerobic conditions on a growth medium containing sodium perchlorate and sodium acetate as electron (e(-)) acceptor and e(-) donor, respe ... | 2008 | 16782316 |
| rat-bite fever septic arthritis: illustrative case and literature review. | rat-bite fever is a rare zoonotic infection caused by streptobacillus moniliformis or spirillum minus, which is characterised by fever, rash and arthritis. the arthritis has previously been described as non-suppurative and isolation of the organism from synovial fluid as very uncommon. this article reports a case of septic arthritis diagnosed as rat-bite fever when the organism was cultured from synovial fluid and reviews another 15 cases of s. moniliformis septic arthritis reported in the world ... | 2006 | 17096137 |
| ftsz directs a second mode of peptidoglycan synthesis in escherichia coli. | certain penicillin binding protein mutants of escherichia coli grow with spirillum-like morphologies when the ftsz protein is inhibited, suggesting that ftsz might govern aspects of cell wall growth other than those strictly associated with septation. while investigating the mechanism of spiral cell formation, we discovered conditions for visualizing this second function of ftsz. normally, inhibiting the cytoskeleton protein mreb forces e. coli cells to grow as smoothly enlarging spheres from wh ... | 2007 | 17513471 |
| [lignite microorganisms]. | the first demonstration that samples of lignite at a depth of 10 m are considerably enriched in bacteria is reported. according to direct microscopy, the abundance of bacteria was about 10(7) cells/g. about 70% of cells had intact cell membranes and small size, which points to their anabiotic state. the fungal mycelium length was no more than 1 m. lignite inoculation onto solid glucose-yeast-peptone medium allowed as to isolate bacteria of the genera bacillus, rhodococcus, arthrobacter, micrococ ... | 2007 | 17668464 |
| nitrogen fixation in grasses inoculated with spirillum lipoferum. | field-grown pearl millet (pennisetum americanum) and guinea grass (panicum maximum), lightly fertilized and inoculated with spirillum lipoferum, produced significantly higher yields of dry matter than did uninoculated controls. up to 42 and 39 kilograms of nitrogen per hectare were replaced by inoculation for pearl millet and guinea grass, respectively. the data demonstrate that nitrogen fixation by these grass-spirillum systems is efficient and is achieved at a reasonable energy cost to the pla ... | 1976 | 17735702 |
| nitrogen fixation in grass-spirillum systems. | | 1977 | 17738420 |
| concerning pure cultures of spirillum. | | 1940 | 17755261 |
| morphology of the bacteria (vibrio and spirillum), an early research.--the intestinal flora. | | 1914 | 17760205 |
| magnetite in freshwater magnetotactic bacteria. | a previously undescribed magnetotactic spirillum isolated from a freshwater swamp was mass cultured in the magnetic as well as the nonmagnetic state in chemically defined culture media. results of mossbauer spectroscopic analysis applied to whole cells identifies magnetite as a constituent of these magnetic bacteria. | 1979 | 17780480 |
| isolation of a deep-sea barophilic bacterium and some of its growth characteristics. | a bacterium, a spirillum, has been isolated from a deep-sea sample and has been found to grow optimally at about 500 bars and 2 degrees to 4 degrees c. these conditions are similar to those prevailing at the 5700-meter depth from which the sample was collected. the organism grows at these pressures and temperatures with a generation time of between 4 and 13 hours; at atmospheric pressure and 2 degrees to 4 degrees c, the generation time is about 3 to 4 days. | 1979 | 17814858 |
| quantification of the filterability of freshwater bacteria through 0.45, 0.22, and 0.1 microm pore size filters and shape-dependent enrichment of filterable bacterial communities. | micro-filtration is a standard process for sterilization in scientific research, medical, and industrial applications, and to remove particles in drinking water or wastewater treatment. it is generally assumed, and confirmed by quantifying filtration efficiency by plating, that filters with a 0.1-0.45 microm pore size can retain bacteria. in contrast to this assumption, we have regularly observed the passage of a significant fraction of natural freshwater bacterial communities through 0.45, 0.22 ... | 2007 | 17993151 |
| the use of a modified hesse's medium for isolating the typhoid bacillus and the cholera spirillum from stools. | | 1912 | 18008642 |
| the flagella of spirillum volutans. | | 1949 | 18108887 |
| spongiispira norvegica gen. nov., sp. nov., a marine bacterium isolated from the boreal sponge isops phlegraei. | the bacterial strain gp_4_7.1t, isolated from the marine sponge isops phlegraei collected at the sula ridge off the norwegian coast, was characterized. the isolate was a motile spirillum that was monopolarly and monotrichously flagellated. it was aerobic, gram-negative, oxidase-positive and catalase-negative. optimal growth occurred between 20 and 30 degrees c, at ph 7-8 and with a salt concentration of 2-3 % (w/v). the isolate showed a relatively restricted nutritional profile. substrate utiliz ... | 2008 | 18676462 |
| [what the practicing veterinarian should know about rat bite fever]. | | 2008 | 18788187 |
| influence of size, shape, and flexibility on bacterial passage through micropore membrane filters. | sterilization of fluids by means of microfiltration is commonly applied in research laboratories as well as in pharmaceutical and industrial processes. sterile micropore filters are subject to microbiological validation, where brevundimonas diminuta is used as a standard test organism. however, several recent reports on the ubiquitous presence of filterable bacteria in aquatic environments have cast doubt on the accuracy and validity of the standard filter-testing method. six different bacterial ... | 2008 | 18800559 |
| rat bite fever caused by spirillum minus treated with penicillin; report of a case. | | 1948 | 18912486 |
| rat bite fever. | rat bite fever (rbf) is a bacterial zoonosis for which two causal bacterial species have been identified: streptobacillis moniliformis and spirillum minus. haverhill fever (hf) is a form of s. moniliformis infection believed to develop after ingestion of contaminated food or water. here the infectious agents, their host species, pathogenicity (virulence factors and host susceptibility), diagnostic methods, therapy, epidemiology, transmission and prevention are described. special emphasis is give ... | 2009 | 19008054 |
| proposal of spirillum winogradskyi sp. nov., a novel microaerophilic species, an emended description of the genus spirillum and request for an opinion regarding the status of the species spirillum volutans ehrenberg 1832. | a novel obligately organotrophic, facultatively microaerophilic spirillum, designated strain d-427(t), was isolated from sulfidic sludge of a municipal wastewater-treatment plant. cells were gram-negative, large and highly motile due to bipolar tufts of flagella covered with mucous sheaths. coccoid cells were sometimes formed. strain d-427(t) grew optimally at ph 7.5-7.8 and 28 degrees c in the presence of 2 % o(2) in the gas phase. the organism showed oxidase and very low catalase activity. the ... | 2009 | 19625415 |
| utilization of oligo- and polysaccharides at microgram-per-litre levels in freshwater by flavobacterium johnsoniae. | to obtain a bacterial strain that can be used to quantify biodegradable polysaccharides at concentrations of a few micrograms per litre in freshwater. | 2010 | 19804538 |
| development and application of a bioluminescence-based test for assimilable organic carbon in reclaimed waters. | assimilable organic carbon (aoc) is an important parameter governing the growth of heterotrophic bacteria in drinking water. despite the recognition that variations in treatment practices (e.g., disinfection, coagulation, selection of filter media, and watershed protection) can have dramatic impacts on aoc levels in drinking water, few water utilities routinely measure aoc levels because of the difficulty of the method. to simplify the method, the pseudomonas fluorescens p-17 and spirillum sp. s ... | 2009 | 19820156 |
| some questions relating to the virulence of micro-organisms with particular reference to their immunizing powers. | the virulent cholera spirillum possesses a greater number of bacteriolytic and agglutinable haptophore groups, or these groups are endowed with a greater avidity for uni- and amboceptors than the avirulent. the number or the avidity of the bacteriolytic receptors possessed by a bacterium is directly proportional to its virulence. however, the agglutinable receptors do not follow this law, i.e., the agglutinable haptophore groups are not necessarily present in the same proportion as the bacterici ... | 1905 | 19866996 |
| spirilla associated with disease of the fetal membranes in cattle (infectious abortion). | spirilla of identical morphological and cultural characters have been isolated in pure culture from the fetuses of fourteen cases of abortion. the condition of the fetus is much the same whether spirilla or the bacilli of abortion are present. this condition is probably due in both cases to interference with the placental circulation. the injurious action of the etiological factor when spirilla are present is limited to the fetal membranes, more particularly the chorion. definite lesions of the ... | 1918 | 19868289 |
| the etiological relation of spirilla (vibrio fetus) to bovine abortion. | the isolation in pure culture of a definite morphological entity (vibrio or spirillum) with practically the same biological characters from a series of cases of the same clinical complex (abortion) establishes a presumption in favor of the specific identity of the organisms and also in favor of the inference that such organisms are etiologically related to the diseased condition. this presumption is strengthened by the fact that disease of the fetal membranes followed the injection of pure cultu ... | 1919 | 19868361 |
| cristispira in north american shellfish. a note on a spirillum found in oysters. | ten varieties of north american shellfish were examined for the occurrence of cristispira in their styles. a cristispira was found in various numbers in ostrea virginiana, venus mercenaria, and modiola modiolus, but none in ensis americana, mya arenaria, mactra solidissima, pecten irradians, mytilus edulis, fulgur canaliculatus, or nassa obsoleta. of 298 oysters, only 128 showed the crystalline styles, in which cristispiras were present in 99. active cristispiras were found in 59 styles only and ... | 1921 | 19868559 |
| methods for the pure culture of certain protozoa. | some media are described which inhibit bacterial growth, but are favorable to protozoan development. a purification technique, which takes advantage of geotropic responses, was devised and used successfully with 7 species of protozoa, including flagellates and ciliates. the method was also used with a spirillum. for one flagellate which could not be purified in this manner, a procedure involving chemical sterilization was employed. paramecium caudatum was purified, but failed to develop subseque ... | 1930 | 19869728 |
| prolonged maintenance of spirochetes and filtrable viruses in the frozen state. | 1. observations are reported on the virulence of various types of spirochetes and filtrable viruses after storage at - 787deg;c. for periods up to 3 years. 2. five specimens of treponema pallidum belonging to 4 different strains, and 7 specimens of t. pertenue belonging to 5 different strains were tested after storage for approximately 3 years. with one exception each specimen contained actively motile treponemes, and all specimens were highly pathogenic for rabbits. many other specimens of thes ... | 1939 | 19870935 |
| the rate of co(2) assimilation by purple bacteria at various wave lengths of light. | 1. the relative absorption spectrum of the pigments in their natural state in the photosynthetic bacterium spirillum rubrum is given from 400 to 900 mmicro. the position of the absorption maxima in the live bacteria due to each of the pigments is: green pigment, 420, 590, 880; red pigment, 490, 510, 550. 2. the relative absorption spectrum of the green pigment in methyl alcohol has been determined from 400 to 900 mmicro. bands at 410, 605, and 770 mmicro were found. 3. the wave length sensitivit ... | 1937 | 19873039 |
| the pigment-protein compound in photosynthetic bacteria : ii. the absorption curves of photosynthin from several species of bacteria. | absorption curves have been obtained in the spectral region of 450 to 900 mmicro for the water soluble cell juice of four species of photosynthetic bacteria, spirillum rubrum (strain s1), rhodovibrio sp. (strain gaffron), phaeomonas sp. (strain delft), and streptococcus varians (strains c11 and orig.). these curves all show maxima at 790 and 590 mmicro due to bacteriochlorophyll, whose highest band, however, occurs at 875, 855, or 840 mmicro depending on the species. the bacteria that appear red ... | 1940 | 19873170 |
| development of an inhibitive enzyme assay for copper. | in this work the development of an inhibitive assay for copper using the molybdenum-reducing enzyme assay is presented. the enzyme is assayed using 12-molybdophosphoric acid at ph 5.0 as an electron acceptor substrate and nadh as the electron donor substrate. the enzyme converts the yellowish solution into a deep blue solution. the assay is based on the ability of copper to inhibit the molybdenum-reducing enzyme from the molybdate-reducing serratia sp. strain dry5. other heavy metals tested did ... | 2009 | 20112861 |