The effect of testosterone upon a photoperiodically induced cycle of gonadotropin secretion in castrated canaries, Serinus canarius.
D000818:Animals; D002171:Canaries / Q000502:physiology*; D002369:Castration; D004343:Drug Implants; D008027:Light; D007986:Luteinizing Hormone / Q000378:metabolism*; D008297:Male; D010507:Periodicity; D010902:Pituitary Gland / Q000187:drug effects / Q000528:radiation effects; D013739:Testosterone / Q000494:pharmacology*
D004343:Drug Implants; D013739:Testosterone; D007986:Luteinizing Hormone