The Flow Cytometry Section (FCS), Research Technologies Branch (RTB), Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH),) offers NIAID investigators in Bethesda, Maryland and at the Rocky Mountain Laboratories (RML) in Hamilton, Montana access to cutting-edge cytometric technologies and instrumentation for high dimensional cell analysis and sorting. In addition, FCS provides training, consultation, method development, assistance with data interpretation, and support for experiments involving broad aspects of unique cytometry applications including operations in high containment laboratories.