the study was conducted to determine the type, frequency and severity of gross, histopathologic changes, effect of route of infection and also, tissue tropism of serotype 793/b (4/91) infectious bronchitis virus. 20 day-old specific pathogen free chicks were inoculated intra-tracheally and intra-orally with 793/b serotype and lesions studied histopathologically at interval up to 10 days post-in...

feline infectious peritonitis virus (fipv) is ubiquitous in domestic cats, especially in young cats and multi-cat environments. in the present study, a total of 248 companion cats of different ages were examined for serum antibody detection of fipv by immunochromatography assay. the cats were selected from those referring to veterinary hospital of ahvaz university, southwestern iran from decemb...

infectious bronchitis (ib) and newcastle disease (nd) are highly contagious and the most economically important diseases of the poultry affecting respiratory tract and causing economic losses in poultry industry throughout the world. in the present study, the simultaneous detection and differentiation of causative agents of these diseases were investigated using duplex-rt-pcr. rna was extracted...