title: Leonardo da Vinci and the first portrayal of quadricuspid semilunar valves and the nodules of Arantius.
authors.forename: Hutan
authors.initials: H
authors.lastname: Ashrafian
authors.forename: Leanne
authors.initials: L
authors.lastname: Harling
authors.forename: Thanos
authors.initials: T
authors.lastname: Athanasiou
mesh_terms: D000716:Anatomy, Artistic / Q000266:history*; D000818:Animals; D001021:Aortic Valve / Q000033:anatomy & histology* / Q000473:pathology; D049669:History, 16th Century; D006801:Humans; D008512:Medicine in the Arts