title: The lymphoid tissue of the avian alimentary tract.
mesh_terms: D000818:Animals; D002645:Chickens; D004064:Digestive System / Q000033:anatomy & histology*; D004848:Epithelium; D005753:Gastric Mucosa; D007413:Intestinal Mucosa; D008221:Lymphoid Tissue / Q000187:drug effects / Q000254:growth & development*; D013739:Testosterone / Q000494:pharmacology
chemical_list: D013739:Testosterone