title: The effects of testosterone propionate and gonadotropins on the bill pigmentation and testes of the house sparrow (Passer domesticus).
mesh_terms: D000818:Animals; D001502:Beak / Q000187:drug effects*; D001717:Birds; D005640:Follicle Stimulating Hormone / Q000008:administration & dosage / Q000494:pharmacology*; D007986:Luteinizing Hormone / Q000008:administration & dosage / Q000494:pharmacology*; D008297:Male; D009929:Organ Size; D010858:Pigmentation / Q000187:drug effects*; D012621:Seasons; D013091:Spermatogenesis / Q000187:drug effects; D013737:Testis / Q000187:drug effects*; D013739:Testosterone / Q000008:administration & dosage / Q000494:pharmacology*
chemical_list: D013739:Testosterone; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone