title: Relationship between incidence and onset age of mammary tumors and reproductive characteristics in mice.
mesh_terms: D000375:Aging; D000818:Animals; D001721:Birth Intervals; D001835:Body Weight; D005260:Female; D007774:Lactation; D008098:Litter Size; D008325:Mammary Neoplasms, Experimental / Q000209:etiology*; D051379:Mice; D008815:Mice, Inbred Strains; D011247:Pregnancy; D012098:Reproduction; D013997:Time Factors