The effects of social rank on reproductive indices in groups of male collared lemmings (Dicrostonyx groenlandicus).
D000311:Adrenal Glands / Q000033:anatomy & histology; D000818:Animals; D005837:Genitalia, Male / Q000033:anatomy & histology*; D008297:Male; D009929:Organ Size; D010413:Penis / Q000033:anatomy & histology; D011863:Radioimmunoassay; D012377:Rodentia / Q000502:physiology*; D012669:Seminal Vesicles / Q000033:anatomy & histology; D012930:Social Dominance; D013091:Spermatogenesis; D013737:Testis / Q000033:anatomy & histology; D013739:Testosterone / Q000097:blood*
D013739:Testosterone