Scientists & Staff | National Institute of Environmental Health Sciences Skip Navigation Scientists & Staff Close the left navigation Add Environment & Cancer Epidemiology Group Alexandra J. White, Ph.D., M.S.P.H. Stadtman Investigator Tel 984-287-3713 [email protected] Che Jung Chang, Ph.D. Special Volunteer Tel 240-319-7387 [email protected] Meklit Daniel, M.Phil. NIH OXCam Fellow Tel 984-287-3713 [email protected] Jennifer L. Ish, Ph.D. Fellow - IRTA Postdoctoral Tel 984-287-3752 [email protected] Katherine N. Pullella, Ph.D. Fellow - Visiting Tel 984-287-4128 [email protected] Marina R. Sweeney Special Volunteer Tel 919-287-4319 [email protected] Back to Top Last Reviewed: April 08, 2026