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the purification of antibody to pr8 influenza a virus. 195913855967
neurotropic and non-neurotropic influenza-a infection of mouse brain studied with fluorescent antibody. 195913824631
a rapid method of detecting recombination between inactivated and infectious preparations of influenza a virus. 195913824632
features of the mel x nws recombination systems in influenza a virus. 1. the effect of age of the mouse on the intracerebral growth of the mel strain of influenza a virus. 195913824633
features of the mel x nws recombination systems in influenza a virus. ii. the formation of n-m, recombinant, strains of influenza a virus in mouse brain. 195913824634
features of the mel x nws recombination systems in influenza a virus. iii. the pathogenicity of recombinant neuro-mel viruses grown in mouse brain and chick embryo brain. 195913824635
features of the mel x nws recombination systems in influenza a virus. iv. increments of virulence during successive cycles of double infection with two strains of influenza a virus. 195913824636
two kinds of particles with contrasting properties in influenza a virus strains from the 1957 pandemic. 195913809995
electron microscopic study of the influenza virus a-equi-praha/56. 195913626655
asian influenza a in boston, 1957-1958. ii. severe staphylococcal pneumonia complicating influenza. 195913636471
guillain-barré syndrome and virus of influenza a (asian strain); report of two fatal cases during the 1957 epidemic in wales. 195913649010
some new or little-known respiratory viruses.the characters and relationships of a number of viruses of potential importance in human respiratory diseases are reviewed. among the myxoviruses discussed are viruses related to influenza a (swine and horse influenza, british and czechoslovak duck influenza, fowl plague), influenza b and c, mumps and newcastle disease, and the para-influenzas. the echo viruses, 2060 and jh viruses, chimpanzee coryza agent and the common cold are also considered. in the final section of the paper the attempted t ...195913651924
properties of influenza viruses a/asia/57 and a-equi/praha/56. i. agglutination of red blood cells.studies of the biological properties of the a/asia/57 influenza viruses and of the strain a-equi/praha/56 have shown that these agglutinate not only chicken, guinea-pig and human erythrocytes but also erythrocytes of swine, calves and horses. the ability to agglutinate horse erythrocytes, in particular, is a characteristic of these strains and has not been observed in other influenza strains of type a, a1, b, c or sendai or in strains of mumps or newcastle disease viruses.195913651925
[outbreak of influenza a/asia/57 during the spring of 1957 in an industrial center]. 195913659933
[production of plaques by swine influenza virus and other viruses of the myxogroup in tissue cultures of calf kidney cells]. 195913660180
[neurological characteristics of viral influenza a-57 (asian)]. 195913660477
association of type 2 hemadsorption (parainfluenza 1) virus and asian influenza a virus with infections croup. 195913666967
formalin treated chicken erythrocytes as indicators of influenza a virus (asian) and its antibody. 195913675198
[experimental studies on the method of obtaining live influenzal vaccine. i. biological and immunological variability of influenza virus a-57 during its adaptation to chick embryo and mice]. 195913676786
further studies of an avirulent mutant of the influenza a strain ws--. 195914417045
morphological observations on tissue cultures of epithelial cells infected with influenza-a viruses. 195913642196
asian influenza a in boston, 1957-1958. i. observations in thirty-two influenza-associated fatal cases. 195913636470
hemagglutination inhibition of asian influenza viruses: a new pattern of response. 195913636056
studies on influenza in the pandemic of 1957-1958. iii. isolation of influenza a (asian strain) viruses from influenza patients with pulmonary complications; details of virus isolation and characterization of isolates, with quantitative comparison of isolation methods. 195913620785
effect of trypsin on a susceptible strain of influenza a virus. 196013694005
[ketoaldehyde derivatives of biphenyl in infection by a-pr8 virus in embryonated chicken eggs. 3. comparison of the activity of xenalamine and of 4,4'-bisbiphenylylglyoxal hydrate in the embryonated egg and in vitro in relation to influenza virus a-pr8]. 196013682765
concurrent infection with influenza a-prime and b viruses in the same individual. 196013727659
physical and biological properties of influenza virus components obtained after ether treatment.the rostock strain of fowl plague, the swine, a, a', and asian strains of influenza a as well as their hemagglutinin and internal s antigen subunits obtained after ether splitting, were found to be morphologically indistinguishable when examined simultaneously. hemagglutinin fractions reacted in a highly strain specific manner when tested by hemagglutination inhibition or by complement fixation using sera obtained after infection. with the same sera internal s antigen fractions were shown to be ...196013719952
[influenza a and b in a military group]. 196013816905
the purification and concentration of influenza a virus (pr8) by a method of continuous extraction with glycine of a zinc-virus precipitate. 196013712331
[passage in hamsters of adapted equine influenza virus, strain army 183]. 196013786732
segregation of influenza a, a2 and b virus strains into strains with varying sensitivity to horse serum inhibitor. 196013762943
[ketoaldehyde derivatives of biphenyl in infection by influenza virus (a-pr8) in cultures of monkey kidney cells. 2. activity of xenalamine]. 196013768706
influenza a infection of cultured cells of whole mouse embryos. 196013851393
the development of soluble (s) and viral (v) antigens of influenza a virus in tissue culture as studied by the fluorescent antibody technique. 1. studies employing a low multiplicity of infection in beef embryo kidney cells. 196013715560
the significance of high complement-fixing antibody titres in the serological diagnosis of influenza a. 196014401023
the development of soluble (s) and viral (v) antigens of influenza a virus in tissue culture as studied by the fluorescent antibody technique. 3. studies on the abortive cycle of replication in hela cells. 196013714376
[conference on influenza a virus: introduction]. 196013724869
the development of soluble (s) and viral (v) antigens of influenza a virus in tissue culture as studied by the fluorescent antibody technique. 2. studies employing a high multiplicity of infection in beef embryo kidney cells. 196013771672
[on the problem of recurrence of economo encephalitis in influenza (a/asia/57)]. 196013842923
[mixed epidemic of influenza a and b with mild pulmonary complications in a training center during the period of march-april, 1959]. 196013713308
apparent antigenic change in a laboratory line of influenza a virus during continued propagation in chick embryos. 196014430968
inoculation time differentials for expression of interference of newcastle disease virus by swine influenza virus in chick embryos. 196013690999
initial reactions during influenza a virus invasion into l cells. ii. growth characteristics of myxoviruses in tissue culture. 196013717988
[studies of the antigenic structure and biological properties of the influenza virus a/torino/1/57]. 196013705812
origin of myeloschisis in chick embryos infected with influenza-a virus. 196014437855
effect of influenza antisera on the enzymatic action of five influenza a viruses. 196013777349
studies on the variation in the antigenic structure of influenza a-2 virus. 196013774946
on the strain specificity of the antibody response in influenza a, as measured by complement fixation using purified antigens, and its relation to in ovo neutralizing antibodies. 196013715561
transmission of antibodies against influenza virus a across the placenta. 196019790362
influenza a and b viruses in monkey kidney cultures. ii. immunogenicity and characteristics of the neutralization reaction as compared to those of chick embryo-propagated viruses. 196114475041
a study in vitro of components in the transmission cycle of swine influenza virus.swine lungworm extracts and suspensions of swine lungworms contain receptor-like substances capable of adsorbing influenza virus, a result consonant with the hypothesis (5-8) that the lungworm may be involved in the swine influenza cycle. yet no evidence for multiplication of virus or even persistence of infectious virus in lungworms at undimished titer was found. clearly much more information is needed, and it is hoped that the present demonstration of the practicality of studying the component ...196114485814
[characteristics of the growth of influenza a-pr8 viruses in monkey kidney cell cultures]. 196114471847
influenza a and b viruses in monkey kidney cultures. i. properties of the viruses. 196113771681
[demonstration of antibodies against swine influenza viruses in man]. 196113757007
amino acid composition of the protein components of influenza virus a. 196113716299
changing viral susceptibility of a human cell line in continuous cultivation. i. production of infective virus in a variant of the chang conjunctival cell following infection with swine or n-ws influenza viruses.during its serial transfer and cultivation in this laboratory, a human conjunctival cell line (chang) was observed to change in morphology. concurrently no change was noted in the susceptibility of the cells to viruses capable of infecting the original cell line. however, it was noted that the derived variant cell line had acquired susceptibility to the induction of cytopathic effects and incomplete virus formation by several strains of influenza viruses. it was then discovered that swine influe ...196113786478
antigenic variants of influenza a virus (pr8 strain). vi. results of repeated passages of the same variant in mice immunized with monovalent homologous vaccine or polyvalent vaccine. 196113711138
does the influenza virus type a/asia/57 have haemagglutinating antigens in common with other known influenza-a types? 196113711442
the influence of influenza virus infection on exogenous staphylococcal and endogenous murine bacterial infection of the bronchopulmonary tissues of mice.mice infected with a non-mouse-adapted asian strain of influenza a virus suffered an impaired capacity to destroy or remove staphylococci introduced by the respiratory route. this temporary inhibition of local defense mechanisms was of 7 to 10 days' duration. the persistence of staphylococci in the lung following influenza did not appear to alter the nature of the pathologic reaction to influenza virus. the presence of influenza virus infection in the respiratory tract of the mouse did not alter ...196113749920
transmission of swine influenza virus by lungworm migration.experimental evidence is presented which confirms the reports by shope (1, 2) that swine lungworms can serve as an intermediate host in transmitting swine influenza virus to pigs. the virus is present in a masked non-infective form as he showed and a provocative stimulus is necessary to initiate infection. multiple injections of ascaris extract or the migration of ascaris larvae furnished the needed provocation. the virus could be elicited in the spring and summer as well as fall and winter, fro ...196113750053
genetic recombination among influenza viruses. i. cross reactivation of plaque-forming capacity as a method for selecting recombinants from the progeny of crosses between influenza a strains. 196113913232
relation of sialidase of influenza a viruses to viral particles as determined by electron microscopy. 196113750389
adsorption of influenza a virus by aerobacter aerogenes spheroplasts.brown, ronald j. (university of kansas, lawrence), albert a. benedict, and nancy armstrong. adsorption of influenza a virus by aerobacter aerogenes spheroplasts. j. bacteriol. 83:1124-1130. 1962.-aerobacter aerogenes spheroplasts adsorbed virus at a greater rate than whole a. aerogenes cells or cell-wall preparations. the largest fragments of sonic-disrupted spheroplasts were responsible for adsorption. adsorption was characterized by rapid disappearance of viral hemagglutinin in about 8 min, el ...196213873715
serological characteristics of some 1960 strains of swine influenza virus. 196214039940
observations on the present distribution of influenza a/swine antibodies among alaskan natives relative to the occurrence of influenza in 1918-1919. 196214486190
the serologic sequelae of an influenza a-2 epidemic modified by intercurrent vaccination in an insular eskimo population group. 196214491274
[on the liberation of bacteria-promoting substances from material containing receptors in the body by influenza a virus. a contribution to virus-bacteria synergism]. 196213917199
studies on the transmission of swine influenza virus with metastrongylus species in specific pathogen-free swine. 196214453488
the in vitro association of swine influenza virus with metastrongylus species. 196214453489
resistance of mice to mouse-adapted influenza a virus. 196214465449
[multiplication of influenza a virus (pr-8) in minced chorioallantoic membrane cultured in vitro. experiments use the roller tube technic]. 196214477908
[on the antiviral action of the naphthyl-, coumaroyl-, and phenanthryl-derivatives of glyoxal. ii. activity on the influenza a-pr8 virus in vitro and in embryonated and deembryonated chick eggs]. 196214012379
quantitative studies on viral interference in suspended l cells. i. growth characteristics and interfering activities of vesicular stomatitis, newcastle disease, and influenza a viruses. 196214484448
influenza viruses, 1957-60.during the period 1957-60 large numbers of influenza a viruses were received at the world influenza centre from countries throughout the world. with one exception all the strains were antigenically closely related to the a2 viruses isolated early in the asian influenza epidemic, and strikingly different from the a1 strains of the previous decade. the a2 viruses were very uniform antigenically and in other in vitro characteristics such as insensitivity to the beta-inhibitor of agglutination. howe ...196220604108
direct and indirect fluorescent-antibody techniques for the psittacosis-lymphogranuloma venereum-trachoma group of agents.ross, martin r. (connecticut state department of health, hartford) and earle k. borman. direct and indirect fluorescent-antibody techniques for the psittacosis-lymphogranuloma venereum-trachoma group of agents. j. bacteriol. 85:851-858. 1963.-direct and indirect fluorescent-antibody (fa) techniques were developed for the detection of group antigen in infected tissue cultures and the titration of group antibody in human antiserum. the growth of the agent of meningopneumonitis (mp) in mouse embryo ...196314044954
decrease of bound sialic acid and inhibitor in chorioallantoic membranes infected with influenza virus.tess, bernard r. (university of illinois at the medical center, chicago) and j. emerson kempf. decrease of bound sialic acid and inhibitor in chorioallantoic membranes infected with influenza virus. j. bacteriol. 86:239-245. 1963.-during the adsorption period after the inoculation of chick embryos with the pr8 strain of influenza a virus, bound sialic acid (bsia) in the chorioallantoic membranes decreased, presumably as a result of cleavage of surface glycoprotein by the viral neuraminidase. a f ...196314058947
congenital heart disease and other malformations produced by influenza a virus and allantoic fluid in the chick embryo. 196314120976
combined effects of chemical carcinogenic agents and viruses. 196314150243
influenza virus vaccine. the effect upon an outbreak of the disease among a geriatric population.in an outbreak of laboratory-confirmed influenza a-2 (asian strain) on a 70-bed geriatric ward in which some patients had received influenza vaccine and some had not, 30 patients out of a total of 75 developed clinical evidence of influenza associated with fever. of the 30 patients, 24 apparently had not received both doses of the influenza vaccine. of 29 patients who received two 0.1 ml doses of influenza virus vaccine, six developed clinical evidence of infection, whereas, of the 46 patients w ...196314081774
synthesis of viral ribonucleic acid by a chemically inactivated influenza virus. 196314043213
the early interaction of animal viruses and cells. 196314159145
the influence of temperature on the multiplication of the pr8 strain of influenza a virus and on the interferon production by the virus infected cells. 196314160956
[on influenza a 2 virus infections in march 1963]. 196314111880
[on influenza a 2 virus infections in march 1963]. 196314118467
investigations about the formation of incomplete forms of fowl plague virus. 196314121206
inhibition of influenza a virus by 1-isobutylbiguanide hydrochloride in mice. 196314066398
conservation and transfer of the rna of animal viruses. 196314069508
the viromicrosomes of fowl plague virus. (brief report). 196314078846
[virucidal and virustatic action of cetyl-dimethyl-benzyl-ammonium chlorides and cetyl-trimethyl-ammonium chloride against fowl plague virus and newcastle disease virus]. 196314091941
[encephalitic manifestations during influenza a]. 196314091975
[hemolysis causing factors in influenza a and mumps viruses]. 196314092950
a method for increasing the sensitivity of the hemagglutination-inhibition test with equine influenza virus. 196314100621
[the electrokinetic potential of chicken erythrocytes under the influence of receptor-destroying enzyme. i. comparative study of the kinetics of the effect of receptor-destroying enzyme and myxovirus]. 196314048644
[the elecktrokinetic potential of chicken erythrocytes under the influence of receptor-destroying enzyme. ii. the quantitative relation between the adsorbed and the free receptor-destroying enzyme phase]. 196314048645
[fowl plague and respiratory diseases of poultry]. 196314052105
infection of the upper respiratory tract of mice with influenza a virus. 196313956256
loss of the haemagglutinating capacity of fowl-plague virus after culture on hela cells. 196313982676
inactivation of hemagglutinating capacity of type a influenza virus by trypsin treatment. 196314021656
an outbreak of type a(2) influenza among horses.the clinical diagnosis of equine influenza was first based on the spectacular contagiousness of the disease, the general clinical resemblances to human influenza and the almost complete absence of complications usually observed in infectious viral arteritis, viral rhinopneumonitis or in other respiratory infections of the horses. the specific viral etiology of the epizootic was ascertained through the isolation of a type a influenza virus and further substantiated by evaluation of the immunologi ...196317649469
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