title: Reproductive physiology of the stallion. IV. Seasonal changes in the testosterone concentration of peripheral plasma.
mesh_terms: D000818:Animals; D002855:Chromatography, Thin Layer; D004542:Ejaculation; D006736:Horses / Q000502:physiology*; D008297:Male; D011863:Radioimmunoassay; D012098:Reproduction; D012621:Seasons; D013091:Spermatogenesis; D013739:Testosterone / Q000097:blood*; D014316:Tritium
chemical_list: D014316:Tritium; D013739:Testosterone