title: Phenotypic definition of cleft lip and its importance to genetic studies of the trait.
authors.forename: D
authors.initials: D
authors.lastname: Bixler
mesh_terms: D000818:Animals; D002971:Cleft Lip / Q000175:diagnosis / Q000235:genetics* / Q000473:pathology; D002972:Cleft Palate / Q000175:diagnosis / Q000235:genetics / Q000473:pathology; D004200:Diseases in Twins; D006801:Humans; D008046:Lip / Q000098:blood supply / Q000196:embryology / Q000294:innervation; D051379:Mice; D010159:Palate / Q000098:blood supply / Q000196:embryology / Q000294:innervation; D010641:Phenotype; D014428:Twins, Conjoined