title: Seasonal changes in endocrine organs of the male common frog, Rana temporaria. 3. The gonads and cholesterol cycles.
mesh_terms: D000324:Adrenocorticotropic Hormone / Q000502:physiology; D000818:Animals; D002784:Cholesterol / Q000097:blood / Q000302:isolation & purification / Q000378:metabolism*; D004952:Esters / Q000302:isolation & purification; D006651:Histocytochemistry; D007985:Leydig Cells / Q000033:anatomy & histology; D008055:Lipids / Q000032:analysis; D007986:Luteinizing Hormone / Q000502:physiology; D008297:Male; D009929:Organ Size; D011896:Rana temporaria / Q000378:metabolism*; D012621:Seasons; D013737:Testis / Q000033:anatomy & histology / Q000378:metabolism*; D014867:Water / Q000032:analysis
chemical_list: D004952:Esters; D008055:Lipids; D014867:Water; D000324:Adrenocorticotropic Hormone; D007986:Luteinizing Hormone; D002784:Cholesterol