title: Ernest A. McCulloch.
authors: Center for Radiological Research, Columbia University, New York, NY 10032.
authors: Howard B
authors: HB
authors: Lieberman
mesh_terms: D002170:Canada; D049673:History, 20th Century; D049674:History, 21st Century; D009683:Nuclear Medicine / Q000266:history; D057905:Stem Cell Research / Q000266:history*