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Zoekresultaten - 409 results
Differential secretion of interleukin-8 by human epithelial cell lines upon entry of virulent or nonvirulent Yersinia enterocolitica.
nonvirulent Y. enterocolitica. Subsequent analysis employing a mutant defective in Yop secretion and various yop mutants showed that the reduced secretion of IL-8 is due to the presence of Yop proteins. Our ...
In vitro susceptibilities of 176 clinical isolates of Streptococcus pneumoniae to 11 beta-lactams, erythromycin, and tetracycline36667
72.7%, respectively. MIC values of all beta-lactams increased with those of penicillin. Ampicillin was equally active as penicillin against isolates with reduced susceptibility to the latter (MIC90 of ...
Role of YadA in resistance of Yersinia enterocolitica to phagocytosis by human polymorphonuclear leukocytes55
a lack of chemiluminescence. The expression of YadA at the bacterial surface also reduced the phagocytosis by PMN s. Finally, we measured the survival of Y. enterocolitica cells confronted with PMN s by ...
Specific serum and local antibody responses against Cryptosporidium parvum during medication of calves with halofuginone lactate.
passed only a reduced number of oocysts when the drug was withdrawn. In a second experiment, 3- to 6-day-old colostrum-fed calves were divided into three groups of 16 or 17 animals each. All animals had ...
Role of the YadA protein in prevention of opsonization of Yersinia enterocolitica by C3b molecules56
able to bind factor H. We conclude that factor H bound to YadA reduces the C3 b deposition on the bacterial surface, probably by a rapid inactivation of C3 b Service: Quality of laboratories Kwaliteit ...
Activation of mouse oocytes, fertilization and development of mouse embryos in vitro after staining with trypan blue or fluorescein diacetate12
subsequent development of mouse oocytes have been shown to be reduced by vital staining Service: Quality of laboratories Kwaliteit van laboratoria Qualité des laboratoires Manuscript versions: Version: ...
Effect of disinfection of drinking water with ozone or chlorine dioxide on survival of Cryptosporidium parvum oocysts.
within 8 min. Also, 0.4 mg of chlorine dioxide per liter (C0) significantly reduced infectivity within 15 min of contact, although some oocysts remained viable. Health Topics: Animal health Category: A1 ...
An objective method for the evaluation of eye irritation in vivo.
correlation with the other effects scored and the good repeatability of the results opens the possibility of introducing an objective and sensitive method into the ocular irritation assay and so reducing intra- ...
Biotype, serotype, and pathogenicity of attaching and effacing enteropathogenic Escherichia coli strains isolated from diarrheic commercial rabbits.
caused effacement of the microvillous brush border. However, pathogenicity for weaned rabbits, as judged by diarrhea score, anorexia, and reduced weight gain, varied according to the biotypes of the ...
Experimental transmission of enzootic bovine leukosis to cattle, sheep and goats: infectious doses of blood and incubation period of the disease.
antibody titers to gpBLV antigens. Identification and removal of infectious animals would reduce or stop the spread of the infection in a herd, and could be used in the strategy to eradicate the disease. ...