RT Journal T1 DR alexander fleming, seated in laboratory, holding petri dish, circa 1941 JF Archives of Pediatrics & Adolescent Medicine JO Archives of Pediatrics & Adolescent Medicine YR 2011 FD May 1 VO 165 IS 5 SP 381 OP 381 DO 10.1001/archpediatrics.2011.51 UL http://dx.doi.org/10.1001/archpediatrics.2011.51 AB Dr Alexander Fleming, seated in laboratory, holding petri dish, circa 1941. Library of Congress.