Glossary: n

NaCl

Chemical abbreviation for sodium chloride (table salt).

narcotic (nar-KAH-tik)

A substance used to treat moderate to severe pain. Narcotics are like opiates such as morphine and codeine, but are not made from opium. They bind to opioid receptors in the central nervous system. Narcotics are now called opioids.

National Cancer Institute (NA-shuh-nul KAN-ser IN-stih-TOOT)

The National Cancer Institute, part of the National Institutes of Health of the United States Department of Health and Human Services, is the Federal Government’s principal agency for cancer research. The National Cancer Institute conducts, coordinates, and funds cancer research, training, health information dissemination, and other programs with respect to the cause, diagnosis, prevention, and… Read more »

National Center for Complementary and Alternative Medicine (NA-shuh-nul SEN-ter … KOM-pleh-MEN-tuh-ree … all-TER-nuh-tiv MEH-dih-sin)

A federal agency that uses science to explore complementary and alternative medicine (CAM) practices, trains CAM researchers, and provides authoritative information about CAM to professionals and the public. NCCAM awards grants for research projects, training, and career development in CAM; sponsors conferences, educational programs, and exhibits; studies ways to use proven CAM practices along with conventional medical practice;… Read more »

National Institutes of Health (NA-shuh-nul IN-stih-TOOTS … helth)

A federal agency in the U.S. that conducts biomedical research in its own laboratories; supports the research of non-Federal scientists in universities, medical schools, hospitals, and research institutions throughout the country and abroad; helps in the training of research investigators; and fosters communication of medical information. Access the National Institutes of Health Web site at… Read more »

nausea (NAW-zee-uh)

A feeling of sickness or discomfort in the stomach that may come with an urge to vomit. Nausea is a side effect of some types of cancer therapy.

NCI

NCI, part of the National Institutes of Health of the United States Department of Health and Human Services, is the Federal Government’s principal agency for cancer research. It conducts, coordinates, and funds cancer research, training, health information dissemination, and other programs with respect to the cause, diagnosis, prevention, and treatment of cancer. Access the NCI… Read more »

needle biopsy (NEE-dul BY-op-see)

The removal of tissue or fluid with a needle for examination under a microscope. When a wide needle is used, the procedure is called a core biopsy. When a thin needle is used, the procedure is called a fine-needle aspiration biopsy.

needle localization (NEE-dul LOH-kuh-lih-ZAY-shun)

A procedure used to mark a small area of abnormal tissue so it can be removed by surgery. An imaging device is used to guide a thin wire with a hook at the end through a hollow needle to place the wire in or around the abnormal area. Once the wire is in the right… Read more »