Histopathological changes in the oviduct of hens producing shell-less eggs associated with precipitins to adenovirus.

Histopathological changes in oviducts of laying hens which produced shell-less eggs associated with the presence of precipitins to adenovirus appeared to be limited to the uterus (shell-gland). Changes could not be seen macroscopically. Microscopically extensive atrophy of the glandular tissue, oedema and infiltration by plasma cells and lymphocytes in the uterine villi were observed. The changes are compared with those described for infectious bronchitis virus infection.