title: Physiology of multiple pregnancy.
mesh_terms: D001724:Birth Weight; D002454:Cell Differentiation; D005260:Female; D005333:Fetus / Q000502:physiology; D005826:Genetics, Medical; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011248:Pregnancy Complications; D011272:Pregnancy, Multiple; D011783:Quadruplets; D011811:Quintuplets; D014310:Triplets; D014427:Twins