Dr. Achsah Dorsey Keegan graduated Magna cum laude from Duke University with a Bachelor of Science degree in Zoology and was elected member of the Duke Chapter of Phi Beta Kappa. She received the Ph.D. degree in Immunology from the Department of Molecular Biology and Genetics at the Johns Hopkins University Medical School, where she worked on the regulation of CD23 and IgE production by IL-4. She subsequently joined the laboratory of Dr. William E. Paul in the National Institute of Allergy and Infectious Disease at the National Institutes of Health to characterize the receptor for IL-4. She joined the Immunology Department at the Holland Laboratory of the American Red Cross in Rockville, Maryland in 1994 and remained there until 2004. She then moved to the University of Maryland School of Medicine in Baltimore and is currently a tenured Professor of Microbiology and Immunology in the Center for Vascular and Inflammatory Diseases and the Program in Oncology, Marlene and Stewart Greenebaum Cancer Center. The focus of her research group is the characterization of the signal transduction pathways activated by IL-4 and IL-13 and the contribution of these pathways in mediating responses in vitro and in vivo.