[Effects of sex hormones on carcinogenesis of experimental gastric cancer--sequential study].
D000818:Animals; D002369:Castration; D004958:Estradiol / Q000494:pharmacology*; D005260:Female; D008297:Male; D008769:Methylnitronitrosoguanidine; D051381:Rats; D011919:Rats, Inbred Strains; D012737:Sex Factors; D013274:Stomach Neoplasms / Q000139:chemically induced*
D008769:Methylnitronitrosoguanidine; D004958:Estradiol