Persisting effects of chronic developmental lead exposure on rats in the radial-arm maze: LEVIN, E.D., M.E. STANTON, S.M. LASLEY AND M.E. GILBERT Department of Psychiatry, Duke University Medical Center, Durham, North Carolina; Neurotoxicology Division, US-EPA, Research Triangle Park, North Carolina; Department of Basic Sciences, University of Illinois College of Medicine, Peoria, Illinois; and ManTech Environmental Technology, Research Triangle Park, North Carolina