The litter effect as a variable in teratologic studies of the albino rat.
D000704:Analysis of Variance; D000818:Animals; D000831:Animals, Newborn / Q000254:growth & development*; D001835:Body Weight; D005314:Embryonic and Fetal Development; D005260:Female; D005298:Fertility; D006128:Growth; D010920:Placenta; D051381:Rats