National library of Medicine
http://www.nlm.nih.gov
National Cancer Institute
http://www.cancer.gov
National eye Institute
http://www.nei.nih.gov
National heart lung & Blood Institute
http://www.nhlbi.nih.gov
National Institute on Aging
http://www.nia.nih.gov
National Institute of Alcohol
http://www.niaaa.nih.gov
National Institute of Allergy and Infection
http://www.niaid.nih.gov
National Institute of Arthritis
http://www.niams.nih.gov
National Institute of Biomedical imaging
http://www.nibib.nih,gov
National Institute on Deafness & communication
http://www.nidcd.nih.gov
National Institute of Dental Research
http://www.nudcr.nih.gov
National Institute on Diabetes and Digestive and Kidney Diseases
http://www.niddk.nih.gov
National Institute of Drug Abuse
http://www.nida.nih.gov
National Institute of Environmental health
http://www.niehs.nih.gov
National Institute of General Medicine
http://www.nigms.nih.gov
National Institute of Mental health
http://www.nimh.nih.gov
National Institute on Minority health
http://www.nimhd.nih.gov
National Institute on Neurology
http://www.ninds.nih.gov
CENTERS & OFFICES
National Center for Complimentary and ALternative Medicine
http://www.nccam.nih.gov
NIH clinical Center
http://www.cc.nih.gov
Office of Aids Research
http://www.oar.nih.gov
Office of Behavioral and Social Sciences Research (OBSSR)
http://obssr.od.nih.gov
Office of Rare Disease Research
http://rarediseases.info.nih.gov
Office of Research on Women’s health
http://orwh.od.nih.gov