Niel T. Constantine, PhD, MT(ASCP), is a professor in the Department of Pathology at the Institute of Human Virology (IHV), University of Maryland School of Medicine. He was appointed Director of the Clinical Immunology Laboratory at the University of Maryland Medical Center in 1990 where he remained until 2016. At the IHV, his group provides serologic and molecular testing capabilities to staff, performs research activities for the development of new test technologies, provides training for international students, and supports a variety of ancillary activities including sample archiving, quality assurance support, and FDA clinical trials.