Natalia Osna is Associate Professor at GI section, Internal Medicine Department, University of Nebraska Medical Center, where she has been since 2000. She is also Research Biologist at VA Medical Center. She received her MD/Ph.D. degree in 1984 at Riga�s Medical University, Riga, Latvia, where she worked as Senior and then Leading Scientist in the Department of Immunology before she moved to UNMC, Omaha, USA