title: FOREWORD. Ninety years ago, Raymond Pearl, a professor of biology at Johns Hopkins University.
authors.forename: Albert D
authors.initials: AD
authors.lastname: Carlson
mesh_terms: D000818:Animals; D005075:Biological Evolution; D001695:Biology / Q000266:history*; D035843:Biomedical Research / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D010506:Periodicals as Topic / Q000266:history*; D012196:Review Literature as Topic