title: Alfred Knudson: the importance of a visionary who enables scientists.
authors.affiliation: Merck Research Laboratories, Merck & Company, West Point, Pennsylvania, USA. Stephen_Friend@merck.com
authors.forename: Stephen H
authors.initials: SH
authors.lastname: Friend
mesh_terms: D005826:Genetics, Medical / Q000266:history*; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D008967:Molecular Biology / Q000266:history*; D012175:Retinoblastoma / Q000175:diagnosis / Q000235:genetics / Q000266:history*; D014481:United States