The inhibiting effect of a norsteroid on tumor formation and on the metabolism of tumor cells.
D000293:Adolescent; D000311:Adrenal Glands / Q000187:drug effects*; D000328:Adult; D000818:Animals; D003276:Contraceptives, Oral / Q000494:pharmacology*; D005260:Female; D006801:Humans; D008234:Lynestrenol / Q000494:pharmacology*; D008656:Mestranol / Q000494:pharmacology*; D051379:Mice; D009374:Neoplasms, Experimental / Q000188:drug therapy*; D010053:Ovary / Q000187:drug effects*; D010902:Pituitary Gland / Q000187:drug effects*; D051381:Rats
D003276:Contraceptives, Oral; D008656:Mestranol; D008234:Lynestrenol