Abstract:
The article includes the study of differences in structural histological modification of the Fabricius bursa at normal healthy chickens and in the situation of bursal disease. The effects are concentrated in the tissue of Fabricius bursa and distracted the lymphoid follicles by atrophying the Fabricius bursa, and bringing the vacuolization of cysts. In the interfollicular tissue there was noticed serohaemorrhagic exudation