Histologic study of tissue reaction in canaries, and chicken embryos infected with a pox agent, isolated from parakeets.
A pox-like virus was isolated from a parakeet with a history of swelling of the eyelids. When compared to canary pox it induced a milder but more prolonged disease in canaries. Hyperplasia and vacuolation of the dermal epithelium were accompanied by characteristic inclusion bodies. The virus produced only mild lesions on the CAM of embryo-nated hens' eggs, though the changes became more severe on passage. Characteristic inclusion bodies were again found. [7 photomicrographs.]-MH.