Yenan received his MSc degree from the University of Oslo, Norway in 2000, and his PhD from Karolinska Institutet in 2008 after after working in the lab of Eric Long at the National Institutes of Health, Rockville, MD, USA and receiving support from the National Institutes of Health, Karolinska Institutet Graduate Partnership Program. His laboratory is located within the Center for Hematology and Regenerative Medicine at Karolinska University Hospital Huddinge. Yenan’s group has developed methods for quantification of human cytotoxic lymphocyte responses. His research strives to understand the complex regulation of cytotoxic lymphocyte function in health, infection, and disease in the setting of human genetic variability and environmental factors. They aim to develop refined techniques for determining human immune status, and hope that outcomes of this work will include fundamentally new conceptualizations of immunological disorders, basic immunological and genetic insights, and potent, specific immunomodulatory interventions for treatment of disease.