Age susceptibility of chickens to Marek's disease.
D000367:Age Factors; D000818:Animals; D001353:Avian Leukosis / Q000175:diagnosis / Q000209:etiology* / Q000401:mortality; D001769:Blood / Q000382:microbiology; D002645:Chickens; D046508:Culture Techniques; D006564:Herpesviridae / Q000254:growth & development / Q000302:isolation & purification; D005779:Immunodiffusion / Q000662:veterinary; D007668:Kidney; D010523:Peripheral Nervous System Diseases / Q000175:diagnosis / Q000209:etiology / Q000401:mortality / Q000662:veterinary; D011201:Poultry Diseases / Q000175:diagnosis / Q000209:etiology* / Q000401:mortality