title: Experimental studies on the etiology of pregnancy gingivitis.
mesh_terms: D004967:Estrogens / Q000378:metabolism; D005260:Female; D005891:Gingivitis / Q000139:chemically induced / Q000209:etiology; D011247:Pregnancy; D011248:Pregnancy Complications; D011374:Progesterone / Q000378:metabolism
chemical_list: D004967:Estrogens; D011374:Progesterone