The differential diagnosis of Marek's disease and lymphoid leukosis.
D000818:Animals; D001353:Avian Leukosis / Q000175:diagnosis*; D002645:Chickens; D003937:Diagnosis, Differential; D008206:Lymphatic Diseases / Q000175:diagnosis / Q000662:veterinary*; D010523:Peripheral Nervous System Diseases / Q000175:diagnosis / Q000662:veterinary; D011201:Poultry Diseases / Q000175:diagnosis*