National Institutes of Health

National Institutes of Health is a biomedical research agency of the U.S. Department of Health and Human Services, based in Bethesda, Maryland. It is the primary U.S. government organization devoted to biomedical and health research, conducting science through the Intramural Research Program and funding external research through the Extramural Research Program. The NIH comprises 27 institutes and centers and supports about 1,200 principal investigators and more than 4,000 postdoctoral fellows across basic, translational, and clinical research. It has contributed to major advances such as vaccines and therapies and is dedicated to advancing knowledge and translating discoveries into improvements in public health. Established in 1887, NIH operates as a central hub for medical research in the United States.