نتایج جستجو برای: vaccinal strain
تعداد نتایج: 218758 فیلتر نتایج به سال:
A dermal strain of vaccine virus has been passed through 99 successive culture passages. This procedure led to a diminution in the pathogenicity of the active agent for the rabbit. By repeated testicular passages in rabbits, however, the virus regained its pathogenicity for that host. New cultures were initiated with the revived virus. A culture strain of virus that has been twice revived in th...
Neonatal diarrhea is the main cause of morbidity and mortality in calves, Rotavirus viral etiology. vaccines are one important methods for control neonates’ calves. In current study, Deoxyribonucleic acid (DNA) sequencing phylogenetic analysis Bovine Group a (BRVA) were performed our study. 1 Calf guard® vaccine genotype (G6P1) 5 different field genotypes (2 G6P5, G10P5, G10P? G10P11) subjected...
Immunogenicity of a low-virulence vaccinal strain against Salmonella abortus-ovis infection in mice.
Strain Rv6, a streptomycin-independent reverse mutant of Salmonella abortus-ovis, multiplied and disseminated in vivo to a lesser extent than the virulent parental strain 15/5, as determined by subcutaneous inoculation of two outbred strains of mice with different susceptibilities to salmonella infection. This lower virulence of strain Rv6 was not modified by 10 passages in susceptible mice. Va...
A Newcastle disease virus (NDV) was isolated in chicken embryonated eggs after detection by real-time reverse transcription-PCR (RRT-PCR) from a captive owl swab. The complete genome sequence of APMV-1/Rhinoptynx clamator/Brazil/22516/2009 (APMV-1, avian paramyxovirus type 1) was obtained using Illumina sequencing. Phylogenetic analysis of the complete genome classified the isolate within NDV c...
infectious bronchitis (ib) disease is one of the important respiratory diseases of poultry that causes annually large economic losses in poultry industry of iran. the aim of this study is molecular characterization of s1 gene of iranian infectious bronchitis viruse (ibv) belonged to 793/b serotype. the whole s1 gene of three local ibv strains in rt-pcr, showed a band above 1600 base pair (bp) i...
It has been shown that cats can be protected against infection with the prototypic Petaluma strain of feline immunodeficiency virus (FIV(PET)) using vaccines based on either inactivated virus particles or replication-defective proviral DNA. However, the utility of such vaccines in the field is uncertain, given the absence of consistent protection against antigenically distinct strains and the c...
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