Scientists & Staff | National Institute of Environmental Health Sciences Skip Navigation Scientists & Staff Close the left navigation Add Placental Cell Biology Group Carlos M. Guardia, Ph.D. Stadtman Investigator Tel 984-287-3070 [email protected] Asmita Singh, Ph.D. Visiting Fellow Tel 984-287-4566 [email protected] Elizabeth P. Banks Biologist Tel 984-287-4297 [email protected] Ruchir C. Bobde, Ph.D. Visiting Fellow Tel 984-287-4660 [email protected] Carolina Marvaldi, Ph.D. Visiting Fellow Tel 984-287-4637 [email protected] Keyshla Y. Negron Rios Fellow - NIH OxCam Predoctoral Tel 984-287-4297 [email protected] Anton S. Novikov Fellow - IRTA Postbaccalaureate Tel 984-287-3070 [email protected] Back Row: Asmita Singh, Anton Novikov, Carlos Guardia, Ruchir Bobde, Elizabeth Banks Front Row: Keyshla Negron Rios, Carolina Marvaldi, Maira Perez Back to Top Last Reviewed: April 16, 2026