The<unk>  <unk>  is an agency of the United States Department of<unk>  and Human Services and is the primary agency of the United States government responsible for biomedical research.
The<unk>  are responsible for 28%—about $28 billion—of the total biomedical research funding spent annually in the U.S., with most of the rest coming from industry.  The<unk>  is divided into two parts: the "Extramural" parts of<unk>  are responsible for the funding of biomedical research outside of<unk> , while the "Intramural" parts of<unk>  conduct research.  Intramural research is primarily conducted at the main campus in Bethesda in unincorporated Montgomery County, Maryland, and the surrounding communities.  The<unk> <unk> of Aging and the<unk> <unk> on Drug Abuse are located in Baltimore, Maryland, and the<unk> <unk> of Environmental<unk>  Sciences is in Research Triangle, North Carolina. The NIAID maintains Rocky Mountain Labs in Hamilton, Montana, with an emphasis on virology.
The predecessor of the<unk>  began in 1887 as the Laboratory of Hygiene. It grew and was reorganized in 1930 by the Ransdell Act into the<unk>  (singular at the time). Today it is one of the world's foremost medical research centers, and the Federal focal point for medical research in the U.S. The<unk> , comprising 27 separate<unk> , centers and the Office of the Director, is part of the United States Department of<unk>  and Human Services.
The goal of<unk>  research is to acquire new knowledge to help prevent, detect, diagnose, and treat disease and disability, from the rarest genetic disorder to the common cold. The<unk>  mission is to uncover new knowledge that will lead to better<unk>  for everyone.<unk>  works toward that mission by: conducting research in its own laboratories; supporting the research of non-Federal scientists in universities, medical schools, hospitals, and research institutions throughout the country and abroad; helping in the training of research investigators; and fostering communication of medical and<unk>  sciences information.
National Institutes of Health
National Library of Medicine
National Center for Research Resources
National Institute for Health and Clinical Excellence
Public health
Minister for Health and Children 
Military medicine
National Center for Health Statistics