title: Quadricuspid pulmonary valve. Anatomical observations in 20 hearts.
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D009206:Myocardium / Q000473:pathology; D011664:Pulmonary Valve / Q000002:abnormalities* / Q000473:pathology