title: Environmental temperature effect on heart weight of chickens.
mesh_terms: D000367:Age Factors; D000818:Animals; D001810:Blood Volume; D001833:Body Temperature Regulation; D002645:Chickens / Q000502:physiology*; D003080:Cold Temperature; D004780:Environment, Controlled; D005260:Female; D006352:Heart Ventricles / Q000033:anatomy & histology*; D006358:Hot Temperature; D008297:Male; D009929:Organ Size; D010953:Plasma Volume; D012737:Sex Factors; D013974:Thyroxine / Q000097:blood*
chemical_list: D013974:Thyroxine