[Lifespan and spontaneous tumors in Wister-Shionogi rats].
D000818:Animals; D005260:Female; D008017:Life Expectancy; D008297:Male; D009369:Neoplasms / Q000401:mortality / Q000662:veterinary*; D051381:Rats; D012376:Rodent Diseases / Q000401:mortality; D012737:Sex Factors