title: Statistical procedure in developmental studies on species with multiple offspring.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D001835:Body Weight; D005260:Female; D010298:Parity; D011247:Pregnancy; D011270:Pregnancy, Animal; D011272:Pregnancy, Multiple; D051381:Rats; D012107:Research Design; D013223:Statistics as Topic