Normal range
Characteristic of 95 percent of values from a normal population. The remaining normal results fall outside the normal range, as do any truly abnormal results. The normal range for a particular test result, condition, symptom, or behavior may differ, based on the patient’s age, size, sex, ethnicity, or culture.
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- Normoxia
Normal levels of oxygen. From norm- (normal) + -ox- (oxygen) + -ia = a normal oxygen state.
- Norovirus
an incubation period of 12-36 hours; an illness characterized by acute onset of nausea, vomiting, diarrhea, abdominal cramping, and, in some cases, fever and malaise; an illness of 12-60 hours duration. The virus is spread primarily from one infected person to another (by the fecal-oral route). Infected kitchen workers can contaminate a salad or sandwich […]
- Norplant contraceptive
Implantable progestin in the form of Norplant was approved by the U.S. Food and Drug Administration (FDA) for contraception in 1990 and the newer Norplant 2 was approved in 1996 for contraception. It is no longer available in the United States. Made up of matchstick-sized rubber rods, this contraceptive device is surgically implanted under the […]
- North Asian tick-borne rickettsiosis
One of the tick-borne rickettsial diseases of the eastern hemisphere, similar to but less severe than Rocky Mountain spotted fever. Symptoms include fever, a small ulcer (eschar) at the site of the tick bite, swollen glands near the site of the bite (satellite lymphadenopathy), and a red, raised (maculopapular) rash.
- Northern blot
A technique in molecular biology, used mainly to separate and identify pieces of RNA. Called a Northern blot only because it is similar to a Southern blot (which is named after its inventor, the British biologist M.E. Southern). There is also a Western blot.