The interaction between antibodies and the surface antigens of infectious bursal disease virus particles was studied in the agarose gel by using single radial hemolysis (SRH) test. Sonicated antigen was used to sensitize the Human "O" erythrocytes. Hemolytic zones, using the filter paper discs were observed after overnight incubation in humid chamber at 37C. Indirect Hemagglutination (IHA) and ...

An outer layer surrounding the capsid of infectious bursal disease virus was evident from electron micrographs of intact virus particles having diameters of 62 to 63 nm. The capsid was found to be composed of large morphological units or capsomeres, measuring about 12 nm in diameter. The architecture of the capsid appears to be that of T = 3 symmetry, with a probable 32 morphological units by r...

Increased susceptibility of birds to avian pathogens in intensive husbandry system has emphasized on necessity of improvement of innate and specific immune responses of birds by the fast establishment of a beneficial microflora and immune stimulator factors to guarantee healthy and low-price products. During this study, 192 one-day-old broiler chicks (Ross-380) in four groups with three replica...

infectious bursal disease virus (ibdv) is the causative agent of gumboro disease, an infectious disease of global economic importance in poultry. the expression of heterologous proteins in p.pastoris is fast, simple and inexpensive. in this study, vp2 encoding gene of classical d78 ibdv was amplified using reverse transcription (rt) polymerase chain reaction (pcr) and cloned into ppiczαa vector...