Developmental changes in the cellular composition of the chicken thymus.
D000375:Aging; D000818:Animals; D000831:Animals, Newborn; D002469:Cell Separation; D002499:Centrifugation, Density Gradient; D002645:Chickens / Q000254:growth & development*; D004586:Electrophoresis; D008214:Lymphocytes / Q000166:cytology*; D013950:Thymus Gland / Q000166:cytology*