Scientists & Staff | National Institute of Environmental Health Sciences Skip Navigation Scientists & Staff Close the left navigation Reproductive Developmental Biology Group Hung Chang H. Yao, Ph.D. Senior Principal Investigator Tel 984-287-4004 [email protected] Kimberly M. Abt, Ph.D. Fellow - IRTA Postdoctoral Tel 984-287-3998 [email protected] Yu Ying Chen, Ph.D. Fellow - Visiting Postdoctoral Tel 984-287-3997 [email protected] Martin A. Estermann, Ph.D. Fellow - Visiting Postdoctoral Tel 984-287-3995 [email protected] Keiko Nakano Biologist Tel 984-287-4241 [email protected] Barbara C. Nicol, Ph.D. Staff Scientist Tel 984-287-4010 [email protected] Christina L. Wilkinson, Ph.D. Fellow - IRTA Postdoctoral Tel 984-287-4243 [email protected] Back to Top Last Reviewed: April 16, 2026