title: Effects of sex hormones and environmental lighting on rat Harderian gland porphyrin.
mesh_terms: D000818:Animals; D002369:Castration; D003624:Darkness; D004958:Estradiol / Q000494:pharmacology; D005260:Female; D012739:Gonadal Steroid Hormones / Q000494:pharmacology*; D006243:Harderian Gland / Q000032:analysis* / Q000033:anatomy & histology / Q000187:drug effects; D007765:Lacrimal Apparatus / Q000032:analysis*; D008027:Light; D009799:Ocular Physiological Phenomena; D009929:Organ Size; D011166:Porphyrins / Q000032:analysis*; D011374:Progesterone / Q000494:pharmacology; D051381:Rats; D013739:Testosterone / Q000494:pharmacology
chemical_list: D012739:Gonadal Steroid Hormones; D011166:Porphyrins; D013739:Testosterone; D011374:Progesterone; D004958:Estradiol