title: Paternity and pedigree, from superfecundation to "test-tube" babies.
mesh_terms: D004477:Ectogenesis; D005260:Female; D005306:Fertilization; D006650:Histocompatibility Testing; D006801:Humans; D010334:Paternity; D011247:Pregnancy; D014427:Twins; D014429:Twins, Dizygotic