title: Differences in the response of Long-Evans, Sprague-Dawley, Wistar, and Sherman rats to x-ray induced increases in litter size.
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D001947:Breeding; D004971:Estrus; D005260:Female; D005298:Fertility / Q000528:radiation effects*; D010060:Ovulation; D011247:Pregnancy; D011831:Radiation Genetics; D051381:Rats / Q000502:physiology*; D012098:Reproduction; D013045:Species Specificity; D013997:Time Factors