- National Institutes of Health, NIH - an agency in the Department of Health and Human Services whose mission is to employ science in the pursuit of knowledge to improve human health; is the principal biomedical research agency of the federal government
--1 is a kind of agency, federal agency, government agency, bureau, office, authority
--1 is a part of
--1 has parts:Department of Health and Human Services, Health and Human Services, HHS National Library of Medicine, United States National Library of Medicine, U.S. National Library of Medicine