title: New evidence that the intra-uterine growth-retarded piglet is a member of a discrete subpopulation.
mesh_terms: D000818:Animals; D000831:Animals, Newborn / Q000502:physiology*; D001724:Birth Weight; D004195:Disease Models, Animal; D005260:Female; D005317:Fetal Growth Retardation / Q000473:pathology* / Q000662:veterinary; D011247:Pregnancy; D013223:Statistics as Topic; D013552:Swine