title: Testosterone determinations in lines of chickens selected for differential mating frequency.
mesh_terms: D000818:Animals; D002645:Chickens / Q000097:blood*; D006400:Hematocrit; D008297:Male; D011863:Radioimmunoassay; D012726:Sexual Behavior, Animal; D013739:Testosterone / Q000097:blood*
chemical_list: D013739:Testosterone