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enhancement of the antigenic activity and virulence of the vaccine strain e of rickettsia prow azeki by passages in cell culture.changes in the biological properties of the vaccine strain e of rickettsia prowazeki occurred upon cultivation of a1 (human amnion) cells infected with this strain. in the course of passages of these cells the antigenic activity and virulence of the rickettsia increased. the changes were observed in 10 out of 22 cell cultures examined: in 6 cultures there was an increase in the antigenic activity and in 4 both in the antigenic activity and in virulence. the time of the occurrence of these change ...19751993
ord river arboviruses--isolations from mosquitoes.one hundred and thirty presumptive viruses have been isolated from 485 pools made from 23,872 mosquitoes collected in the ord river area of north-west australia. one hundred and eleven of the virus isolates isolates came from pools of culex annulirostis, the dominant mosquito species caught in the vicinity of kununurra. forty-five of the viruses pathogenic for newborn mice have been further characterized-19 as flaviviruses, 1 alphavirus, 9 koongol, 1 mapputta and 15 non-haemagglutinating viruses ...197614613
light-activated calcium release from sonicated bovine retinal rod outer segment disks.calcium trapped within sonicated and resealed bovine rod outer segment disks is released upon light exposure with a stoichiometry of 0.75 +/- 0.05 calcium for each rhodopsin bleached. the amount of calcium liberated is proportional to the amount of bleaching in the range of 20 to 100% bleaching and is relatively insensitive to the internal trapped calcium concentration. the results are obtained using a flow system in which the disk membrane vesicles are adsorbed on glass particle supported by a ...197714680
iodination-deiodination. a radiochemical method for detection of structure and changes in structure in rna.bound iodine is released from radioiodinated nucleotides in polymers exposed to sodium bisulfite. the rate of bisulfite-catalyzed deiodination of pyrimidines can be controlled both by change of temperature of ph and is also dependent on the molecular association of the nucleotide. the rate of release of iodine from iodocytidine in polycytidylate is greater than the rate of elimination from rna. experiments testing the influence of base-pairing of the iodopyrimidines in synthetic polynucleotides ...197714687
[impression on the 17th congress of japan maternal health organization: positive stimulation toward better services]. 199915151
altered interaction between binding and catalytic subunits of a cyclic amp-stimulated protein kinase from hepatoma cells. 197715518
a plausible sequence of the conformational changes of hemoglobin induced by oxygenation. 200015522
purification and characterization of a plasminogen activator secreted by cultured human pancreatic carcinoma cells.a plasminogen activator secreted by cultured human pancreatic carcinoma (mia paca-2) cells has been purified to apparent homogeneity by procedures including sepharose-l-arginine methyl ester affinity chromatography, sephadex g-200 gel filtration, isoelectric focusing, and sodium dodecyl sulfate gel electrophoresis. the plasminogen activator shares many properties with urokinase including: molecular weight (55 000), isoelectric point (8.7), heat stability (60 degrees c, 30 min), ph stability (1.5 ...197715590
spatial distribution of functional oh- carriers along a characean internodal cell: determined by the effect of cytochalasin b on h14co3- assimilation. 200016139
acute bacteremia in asplenic renal transplant patients.four cases of overwhelming bacteremia were observed in asplenic renal transplant patients 12 to 20 months after transplantation. the bacteriologic findings and presentation of these infections are characteristic of post-splenectomy sepsis reported in nontransplant patients. it is suggested that the absence of the spleen, more than immunosuppression with azathioprine and prednisone, predisposes to these late, uncommon infections after transplantation.197716144
[current tasks of cytopathology]. 200016193
dna and enzyme behaviour during the early period of experimental hepatic regeneration proceedings. 197616335
parkinson's disease.the classical clinical picture of parkinson's disease is all too frequently encountered in the elderly patient. the modern classification of causes of parkinson's disease lists 'idiopathic', and 'post-encephalitic forms', the latter being uncommon in this community.200016582
serum gonadotropins in the rat after prenatal damage to the testes by busulfan and their reaction to cryptorchidism, castration and administration of testosterone.adult male rats prenatally treated with 1,4-bis-(methanesulfonyloxy)-butane (busulfan), which damages the gonocytes, undergo cryptorchidization, castration or testosterone treatment and the fsh, lh and testosterone levels in serum are measured. basal values of these hormones do not differ from those of controls. after cryptorchidization fsh levels rise but the lh levels do not. following orchidectomy both hormone levels increase significantly. application of testosterone in various doses increas ...197716621
pain, depression and phobia: a biochemical hypothesis. 200016798
nefopam hcl interaction study with eight other drugs.a controlled clinical trial was undertaken to determine potential for drug interaction of nefopam hcl, a new analgesic, with eight other widely used compounds. nefopam hcl was administered in combination with these drugs and placebo to forty-five healthy volunteer subjects in nine groups of five subjects each. possible drug interactions were detected by the occurrence of side-effects and interference with bioavailability of the new analgesic, also by changes in vital signs or in various laborato ...200016799
cellular factors. immunologic tolerance: irradiation and bone marrow transplantation in induction of canine allogeneic unresponsiveness. 197717203
the use of behavioral checklists to assess physical examination skills. 199917754
ultrastructural features of osmotic shock in mussel gill cilia. 199917755
[surgical management of thoracic and thoraco-abdominal injuries].from 1970 to 1974 407 patients with thoracic injuries have been treated by the authors in the 2nd surgical and thoracic surgical department of the "jános" hospital, budapest--out of them 190 patients were classified as severely injured. the material and the operative technique in isolated thoracal and combined thoracal-abdominal injuries are discussed. the importance of the operative stabilization of the thoracic wall is emphasized and fixation of the thoracic wall by means of pericostal sutures ...199917790
the speed of passive dendritic conduction of synaptic potentials in a model montoneurone. 197717867
in vitro testosterone synthesis by testicular tissue of old mouse: the metabolism of 3beta-hydroxy-5-ene steroids. 197718359
[fever as a sign of testicular tumor in a patient with cryptorchism]. 200018844
interaction of folic acid with ribonuclease a. 197721693
some biological properties of an endotoxic lipopolysaccharide from the typhus group rickettsiae.a lipophilic thermostable lipopolysaccharide (lps) complex was isolated by phenol extraction from purified suspensions of the typhus group rickettsiae. the lps complex is antigenic and possesses some endotoxic properties such as toxicity for actinomycin d-treated mice, pyrogenicity for rabbits and guinea pigs, ability to elicit hypothermia in white rats and local schwartzman reaction and active cutaneous anaphylaxis in rabbits.197722240
the microstructure of the dentition and dermal ornament of three dipnoans from the devonian of western australia: a contribution towards dipnoan interrelations, and morphogenesis, growth and adaptation of the skeletal tissues. 199822883
[significance of anti-albumin antibodies in chronic liver disease]. 199922919
comparative digestibility of acid detergent fiber by laboratory albino and wild polynesian rats.the effects of adding 5%, 10%, and 15% acid detergent fiber to a nonfibrous basal diet were examined in a comparative feeding study with polynesian rats (rattus exulans) and laboratory rats. digestibility coefficients for dry matter, crude protein, and gross energy declined significantly in both species as fiber content increased, but averaged significantly lower in the polynesian than in the laboratory rat. fiber digestibility was not significantly affected by fiber level but was by species, wi ...197823419
world medical assembly, dublin, 1977. 199723488
tryptic digestion of immobilized d-amino acid oxidase. 197825787
[acute mucocutaneous lymph node syndrome (kawasaki-syndrome) with fatal periarteritis nodosa of the coronary arteries. another case from europe].case report of a 1 8/12-year-old boy suffering from an acute febrile disease with phlegmonous cervical lymphadenopathy, skin rash and other septic symptoms. bacterial cultures were sterile, and antibiotics had no effect, whereas prednisone made an immediate improvement. on the 23rd day of illness the patient died unexpectedly. autopsy revealed a ruptured coronary aneurysm due to periarteritis nodosa. this curious disease of yet unknown cause is quite frequent in japan, but very rare in europe.200026640
environment and selfsufficiency of elder man (author's transl).the problems of environment of elderly people are concentrated in social area and in the intimate living space, which can not be maintained sufficiently because of increasing age and decreasing performance. the consequences of mobility in industrial revolution scattered families and also deprived old men of their helpers. inadequate living rooms and absence of technical comfort especially in the houses of the very aged men produce intense dependence of the own individual performance. medical dat ...197827118
the effects of acridine orange on deoxyribonucleic acid in escherichia coli.1. acridine orange inhibits growth of escherichia coli k12 when incubated at ph 7.9, but not at ph 7.4.2. at a non-permissive temperature for dna polymerase i, acridine orange inhibits growth of a temperature-sensitive strain and also increases the rate of elimination of the f'-lac plasmid. 3. dna isolated from cells treated with acridine orange under conditions that inhibit growth contains material of low molecular weight, which is absent from dna isolated from cells treated under conditions in ...197827167
virus-lymphocyte interactions. 200027197
continuous measurement of tissue ph in the human fetal scalp.a method for continuous measurement of scalp tissue ph is described. the tissue ph probe was found to be robust and values for tissue ph were close to those for scalp blood ph. combining the ph and fetal heart fate (fhr) electrodes in the one mechanical assembly facilitated application to the fetal scalp in early labour but the combined assembly electrode was found to have some disadvantages and manufacture of a separate tissue ph electrode is recommended. continuous monitoring of scalp tissue p ...197829656
acupuncture: its neurophysiological basis: an anaesthetist's foreword. 197829773
flufenamic acid inhibition of pge2 production by rectal mucosa in ulcerative colitis. 200129819
the fluorescence of fluorescamine-amino acids. 200130402
blockade by n-methylhydroxylamine of activation of guanylate cyclase and elevations of guanosine 3',5'-monophosphate levels in nervous tissues.hydroxylamine and n-methylhydroxylamine prevented the activation of soluble guanylate cyclase by the endogenous activator as well as by nitroso compounds such as n-methyl-n'-nitro-n-nitrosoguanidine or nitroprusside, while other derivaties of hydroxylamine were ineffective. hydroxylamine and n-methylhydroxylamine did not alter the basal guanylate cyclase activity of purified enzyme preparations. kinetics analysis indicated that n-methylhydroxylamine competes with n-methyl-n'-nitro-n-nitrosoguani ...197831192
cigarette smoking: a dependence on high-nicotine boli. 200131270
cardiac lesions induced by chemicals.chemically induced cardiomyopathies are frequently the consequences of a cardiac metabolic imbalance brought about by exaggerated functional affects. the infarctlike lesions induced by adrenergic beta-receptor stimulants and the vasodilating antihypertensives serve as examples of this phenomenon. direct cardiotoxic mechanisms not related to cardiovascular functional effects are responsible for another class of toxic cardiomyopathy. an example of this is the cardiomyopathy produced by the anthrac ...200131282
[cimetidine and other h2 receptor blockers]. 200131319
analysis of cysteinyldopas, dopa, dopamine, noradrenaline and adrenaline in serum and urine using high-performance liquid chromatography and electrochemical detection.the catecholic amino acids, dopa, 2-s- and 5-s-cysteinyldopa, and 2,5-s,s-dicysteinyldopa were determined qualitatively in serum from patients with malignant melanoma by reversed-phase high-performance liquid chromatography, using electrochemical detection. in urine the catecholamines dopamine, noradrenaline and adrenaline were also determined qualitatively, as well as the above-mentioned compounds, in a single chromatographic run. the conditions were optimized by changing the ph of the mobile p ...200133194
[guidelines for laevolac therapy against the endogenous factor in periodontal diseases]. 197833356
kinetic studies in isolated organs: tools to design analgesic peptides and to analyze their receptor effects.the opioid activities of peptide and non-peptide narcotics were studied in longitudinal muscle strip of guinea pig ileum (gpi) and in mouse vas deferens (mvd). the comparison of agonist activities of peptides found in gpi and mvd offered the opportunity to predict the presence but not the magnitude of potential analgesic activity. the kinetics of the antagonism between naltrexone and different types of agonists were also determined in these systems. using c-6 epimers of naltrexone, it was found ...197933396
[dopamine-receptor stimulators and neuroleptic-induced dyskinesia (author's transl)].we have examined bromocriptine, levodopa and trihexyphenydil ins ingle-blind design in 16 chronic productive schizophrenics having the same degree of tardive dyskinesias. treatment time for each patient was 60 days: bromocriptine was given in mean daily doses of 32 mg, levodopa 3,2 g and trihexyphenydil 27 mg. bromocriptine and trihexyphenydil allowed the continued use of neuroleptics, without necessitating an increase in dosage. on the other hand, with levodopa 25% of the patients deteriorated, ...200133397
effect of growth conditions on the antigenic components of streptococcus mutans and lactobacilli.1) the release of lta from chemostat-grown cultures of s. mutans and l. fermentum is dependent on the generation time and ph. 2) the growth rate affects the immunogenicity of lta and the wall polysaccharide of l. fermentum. 3) the growth of l. plantarum under glucose limitation influences the glucose content of the wall teichoic acid. the composition of the wall polysaccharide of s. mutans ingbritt may also be changed under these conditions. 4) the conditions of autoclaving used to release cell ...197833543
assay of methimazole by n.m.r. spectroscopy. 200134705
the stimulatory effect of 5ht and the role of the paraventricular nucleus on pms induced ovulation in the immature rat.immature rats can be induced to ovulate with pregnant mare serum (pms) as long as they weigh over 60 g. in the rats weighing less than 60 g 5-hydroxytryptamine (5ht)-60 micrograms/rat intraventricularly or 2 micrograms/rat in the paraventricular nucleus (pvn)-stimulated ovulation. injections into several other hypothalamic nuclei were ineffective. in rats weighing greater than 60 g, lesions of the pvn or injection of 10 micrograms/rat p-chlorophenylalanine into the pvn inhibited ovulation. the h ...197937456
quantitative study on the reproduction of virulent and vaccine rickettsia prow azeki strains in cells of different origin.vaccine and virulent strains of rickettsia prowazeki differ by the degree of reproduction in mccoy, b, and chick embryo cells but replicate to similar levels in fl cells. as distinct from the virulent breinl strain, the vaccine e strain rickettsiae permanently lost their capacity for long-term reproduction in mccoy cell cultures but retained their capacity to adsorb on to and penetrate into these cells. consequently, the reproduction of rickettsiae is limited at later stages of intracellular inf ...197942302
the soluble antigens of rickettsia prowazeki, r. typhi and r. canada. investigation of their interrelationship by various serological methods.the purpose of this research is the isolation of an eventual species-specific fraction from the "soluble antigen" of rickettsiae. the "soluble antigen" of r. prowazeki (breinl strain), r. typhi (wilmington strain) and r. canada were purified at 25% saturation with ammonium sulphate (psa). corresponding antisera were produced in rabbits. the serological methods used were the complement fixation, the micro-agglutination, the precipitation method in capillary tubes and the immuno-diffusion method c ...197552235
letter: si chaos. 200155546
letter: angiosarcoma of the liver in p.v.c. fabricators. 200155548
letter: growth-hormone responses in parkinson's disease. 200155746
letter: salbutamol aerosol in premature labour. 200155768
letter: haematology: origins of an impasse. 200155917
fetal syphilis in the first trimester.evidenc of first-trimester fetal syphilis was sought in the products of conception in a therapeutic abortion clinic. during two collection periods of one week, five patients with serologic and clinical data consistent with recent syphilitic infection were identified. their conceptuses were carefully examined by silver and immunofluorescent stains for the presence of treponema pallidum. two of these five conceptuses (9 and 10 weeks' gestation) were found to contain t. pallidum by these methods. t ...197656895
[the influence of the plasmaexpander hydroxyethyl starch on the serological blood grouping tests as compared to dextran 60 and whole blood (author's transl)].the influence of hes on serological blood grouping (abo. rh. crossmatch) was tested in comparison with dextran. it was shown out that a previous volume substitution up to 20% did not influence the reading of blood grouping determination. higher dilutions of blood led to rouleaux formation which however could be easily distinguished from agglutination by addition of isotonic saline solution. crossmatching brings difficulties, as weak antibodies might be missed even using the ahg test due to too h ...200156904
effects of poly(1-vinyluracil) and poly(9-vinyladenine) on viral rna-directed dna polymerase.the effects of poly(1-vinyluracil) [poly(vu)] and poly(9-vinyladenine) [poly(va)] on the rna-dependent dna polymerase activity of murine leukemia virus (moloney strain) were studied. vinyl polymers themselves cannot act as templates for the polymerase. however, if a vinyl polymer is added to a polymerase reaction mixture in which a complementary polynucleotide serves as the template, the reaction is inhibited: thus with polyribocytidylic acid as template and oligodeoxyguanylic acid as primer, ne ...197656995
a serial study of pregnancy proteins in primigravidae.the plasma concentrations from four 'pregnancy proteins' and three steroid hormones have been measured throughout pregnancy in 15 primigravidae. two of the proteins, human placental lactogen (hpl) and pregnancy-specific beta1-glycoprotein (psbetag), are specific for pregnancy and correlate well with the stage of gestation. it is suggested that measurement of psbetag may be useful in assessing feto-placental wellbeing. neither of the pregnancy-associated proteins, steriod-binding beta-globulin (s ...197657799
[the manuscript of joseph dind]. 200160194
the effect of propranolol on normal physiologic tremor.it has been demonstrated that intravenous propranolol produces a 34-60% decrease in normal physiological tremor. the decrease, in response to small doses of the drug (less than 12 mug/kg), was linearly proportional to the baseline tremor size and occurred only following a 10 min delay. it is possible that the effect on tremor is due to the formation of a highly specific centrally acting metabolite of propranolol.200160218
a model of the breakdown and removal of the chromatin components during feulgen acid hydrolysis.a stochastic model of feulgen hydrolysis is proposed. the model, constructed so as to embody the main features of chromatin structure, is simple enough to allow the calculation of extraction rates. extraction rate curves generated by the model are compared with experimental curves obtained under various conditions (different fixatives and hydrolysis solutions). a good correspondence is found between the experiments and the predictions of the model.200160310
[labeled bleomycin: methodologic aspects]. 200160490
effects of maternal immunization on the survival and postnatal development of the offspring.immunization of females prior to mating altered the size of their litters and the incidence of postnatal death and runting, and the effect varied with the antigen used. litter size was decreased after immunization with an aggregated synthetic polypeptide or with dnp-bgg, but not with aggregated insulin. postnatal mortality was increased after immunization with an aggregated polypeptide, aggregated insulin or dnp-bgg. postnatal runting was increased after immunization with the aggregated polypept ...197660843
electron microscopy of surface structures of rickettsia prowazeki stained with ruthenium red.in studying surface structures of rickettsia prowazeki (e and breinl strains) by ruthenium red staining, a microcapsular layer 125-165 a thick, composed of subunits 85--100 a in diameter with a periodicity of 100--120 a as well as the inner layer of the cell wall 40--60 a thick were clearly revealed. in tangential sections of cells, subunits of the microcapsular layer were found in parallel striation arrays. these structures presumably contain acid mucopolysaccharides detectable by ruthenium red ...197663238
characterization of the madrid e strain of rickettsia prowazekii purified by renografin density gradient centrifugation.the avirulent madrid e strain of rickettsia prowazekii cultivated in chicken yolk sacs could be purified successfully with a renografin density gradient method developed previously for rickettsia typhi. recovery during purification, viability, and lack of contamination with host cell components were similar for the two species, although yields of r. prowazekii per yolk sac were lower. purified typhus rickettsiae provided satisfactory antigens in the complement fixation, ouchterlony double-diffus ...197764456
antibody clearance by micropinocytosis: a possible role in fetal immunoprotection. 200164836
14c-glycholic-acid breath-test. 200164839
[effect of several long-acting broad spectrum antibiotics on prowazek rickettsia]. 197664918
[experimental infection of domestic animals with r. prowazeki and r. canada].the authors infected lambs with r. prowazeki and r. canada to ascertain their possible role in the natural infection of the animals. the lambs were infected subcutaneously with increasing doses; rickettsiemia was recorded with the aid of tests on guinea pigs and ixodidae and argasidae ticks fed on the lambs. dynamics of antibody formation was ascertained in the infected animals in the agglutination reaction and in the complement fixation test. the antigenic affinity of r. canada and rickettsia o ...197665076
myopathies with abnormal mitochondria. a clinical, histological, and electrophysiological study.among 135 consecutive patients with myopathy, 17 showed abnormalities in the mitochondria of muscle. in eight of these patients the abnormalities were demonstrated by electron microscopy. in all patients gömöri trichome stain showed red masses at the sites of the mitochondria and diformazan deposits when stained for mitochondrial enzymes. the patients could be divided into three groups: i) nine patients had weakness of the extra-ocular muscles, either alone or associated with weakness of skeleta ...200165099
plaque assay and cloning of scrub typhus rickettsiae in irradiated l-929 cells.it was demonstrated that gamma-irradiated l-929 cells support plaque formation by three strains of rickettsia tsutsugamushi and representative species of the spotted fever and typhus group rickettsiae. sensitivity of the plaque assay for detection of viable scrub typhus rickettsiae was similar to that achieved with intraperitoneal inoculation of random-bred mice. the concentration of irradiated cells and the temperature and length of incubation were all found to affect plaque size. a technique c ...197769632
a.f.p. in amniotic fluid and serum. 200277393
external layers of rickettsia prowazekii and rickettsia rickettsii: occurrence of a slime layer.using a simple specific-antibody stabilization procedure on organisms gently liberated from their host cells, we have demonstrated by electron microscopy that rickettsia prowazekii and rickettsia rickettsii possess a coat of variable thickness, external to the outer leaflet of the cell wall and the structure designated by others as a "microcapsule," which corresponds most closely to the slime layer of certain other bacteria. reactions in the methenamine silver and ruthenium red staining procedur ...197883297
application of histochemical and histological stains to epoxy sections: pre-treatment with potassium permanganate and oxalic acid. 197884320
serum alkaline phosphatase activity in acrodermatitis enteropathica: an index of the serum zinc level.a significant positive correlation between serum zinc and serum alkaline phosphatase levels was demonstrated in four patients suffering from acrodermatitis enterophathica for which they received oral zinc sulphate therapy. in one of the male patients a significant inverse relation between serum zinc and serum copper was found.199984482
recommended site and depth of newborn heel skin punctures based on anatomical measurements and histopathology.the heels of 40 children (0.56--13.15 kg), 35 of whom were newborn infants and 28 of whom had 2--20 visible skin punctures, were examined at necropsy, and the thickness of the tissue layers was measured with a metric vernier caliper. histological examination showed that uncomplicated skin-puncture wounds heal with minimum scarring and no neuroma formation. 1 infant had an infected puncture track extending into the calcaneus and resulting in cellulitis and focal calcaneal necrotising chondritis. ...199984896
food allergy. 197984902
the use and abuse of developmental screening. 200085448
[relationship between the method of obtaining material and cytologic diagnosis of soft tissue tumors]. 199985739
radiation doses after three mile island. 200086763
cell types required for h-2-restricted cytotoxic responses generated by trinitrobenzene sulfonate-modified syngeneic cells or trinitrophenyl-conjugated proteins.murine spleen cells were fractionated over nylon wool or sephadex g-10 columns, and the cell types involved in the generation of trinitrophenyl (tnp)-specific, h-2 restricted (tnp-self) cytotoxic effector cells were studied from cultures stimulated with trinitrobenzene sulfonate (tnbs)-modified syngeneic cells, tnp-conjugated soluble proteins such as bovine gamma-globulin (tnp-bgg), or bovine serum albumin (tnp-bsa). unfractionated or nylon nonadherent responding cells generated such effectors, ...197987418
acute non-a, non-b hepatitis: specific ultrastructural alterations in endoplasmic reticulum of infected hepatocytes. 200187721
adult respiratory-distress syndrome in salicylate intoxication. 200187755
performance of home blood-glucose meters. 200187914
control of thyroglobulin synthesis and secretion (second of two parts). 200188013
anaphylatoxin-induced shock and two patterns of anaphylactic shock: hemodynamics and mediators.in the dog, different cardiorespiratory reactions were identified in two types of anaphylactic shock and in c5a-at (anaphylatoxin)-induced shock. all three types had in common a portal blood pooling with consequent decrease in the venous return, cardiac output, and arterial pressure. in anaphylaxis (a) of the first type, at a low titer of hemagglutinating antibodies, the latent period was 68 s and heart and lung function was unchanged. in the second type, at high titer, the latency was 19 s and ...197988165
guinea pig transfer factor: restriction of macrophage migration inhibitory activity to extraordinary dilution confirmed with demonstration of diminished potency of stored preparations. 197988292
simple, differential staining technique for enumerating rickettsiae in yolk sac, tissue culture extracts, or purified suspensions.a differential staining method employing acridine orange-stained rickettsiae and safranin-stained standardized suspensions of shigella dysenteriae is described for enumerating rickettsiae harvested during various stages of the growth cycle.197988460
pseudopapilledema. 200088936
[porton uptake by isolated chloroplasts during cyclic and non-cyclic electron transport catalyzed by photosystem i in the presence of ferredoxin].proton uptake by isolated chloroplasts during cyclic electron transport in the presence of ferredoxin and under nadp+ reduction from the ascorbate--tmpd donor pair under anaerobic conditions was studied. it was found that during cyclic transport the proton uptake is less intensive than under nadp+ reduction. in the presence of atp the proton uptake is increased in the first case and is decreased in the second one. during cyclic transport in the presence of gramicidin d the proton uptake is compl ...200188967
the use of visual feedback to control vocal intensity and nasalization.a device which provides visual feedback of vocal intensity, nasalization, or a ratio of nasalization to vocal intensity, is described. the device was used in several experiments in which control of vocal intensity was a necessary component. normal and hypernasal speakers were able to control their vocal intensities successfully when using the visual display. the display also was used in an experiment designed to determine how well normal speakers can manipulate their nasalization without visual ...199989126
treatment of kidney-allograft rejection with cyclosporin a. 199989479
c.s.f. beta-endorphin in schizophrenia. 199989490
serum alphafetoprotein (afp) in bilharziasis.two hundred and eighty-four patients of various ages from an endemic area, diagnosed as having bilharziasis by the presence of living schistosoma haematobium's ova in the mid-stream urine sample, have been investigated for the presence of alphafetoprotein (afp) in the serum. one hundred and forty-one (49.6%), were positive; no false positives have occurred. radioimmunoassay is capable of increasing the positivity rate still further. the detection of afp will be of limited value as a screening te ...200089881
stepmother nature--a medico-historical scan. 200089929
in-phase brain activities during arousal and sleep.eeg of sensorimotor area, emg of neck muscles and unit activity in lateral geniculate (lg) nucleus, recorded in freely moving cats, were analysed for the presence of correlations between them. the 3 activities were first integrated with a 2 sec time constant, then a correlation coefficient was assessed between time-linked points of the 3 records for periods of 40 sec. the average vlaues of the correlation coefficients were found to increase from arousal through slow synchronized sleep (s sleep), ...197989948
use of the fluorochrome 4'6-diamidino-2-phenylindole in genetic and developmental studies of chloroplast dna.use of the dna-specific fluorochrome 4'6-diamidino-2-phenylindole (dapi) makes it possible to examine in situ the structure of chloroplast dna (chdna) with the fluorescence microscope. this simplifies the study of genetic and developmental changes in chloroplast dna. three examples are presented. (a) wild-type euglena gracilis b contains several chloroplast dna nucleoids per chloroplast. a yellow mutant lacking functional chloroplasts is similar, but such nucleoids are absent in an aplastidic mu ...200090051
child-resistant containers really are effective. 200190232
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