Category: N

In molecular biology, a ring-shaped chemical (either a purine or a pyrimidine) that specifies the coded genetic structure of DNA and RNA. DNA is made up of the bases adenosine, cytosine, thymine, and guanine; RNA contains uracil, in place of thymine.  

Bandage 2½a in X 8 yd (6.4 cm X 7.3 m). Bandage following thyroid gland surgery: Roller bandage 2½ in X 9 yd (6.4 cm X 8.2 m). Adhesive plaster bandage for thyroidectomy: Used to hold dressing on wound in place. A small dressing is applied to center of strip and then applied to back…

An increase in asthmatic symptoms during sleep. Nocturnal asthma may be caused by a variety of conditions, including gastroesophageal reflux, allergens in the bedroom, circadian variations in circulating hormone levels, or inadequate doses of antiasthmatic medications at night. Treatment is tailored to the underlying cause.  

A somatoform disorder marked by mental and physical fatigue, dyspnea, giddiness, precordial pain, and palpitation, especially on exertion. The cause is unknown but the condition occurs in those under stress. It is common among soldiers in combat. Psychotherapy and removal of the stress situation are needed.  

Bone, cartilage, and joint disruption or destruction that occurs because of diminished sensation in a limb (e.g., Charcot’s joint).  

Arch formed by the nasal bones and by the nasal processes of the maxilla.  

An antigen present in the cells of patients with certain types of connective tissue disorders. Corticosteroids can be very helpful in treating patients with high concentrations of nuclear antigen.  

An antibody present in a person without known exposure to the specific antigen, such as an anti-A antibody in a person with B blood type.  

An antibiotic that is specifically effective against a limited group of microorganisms.  

Anemia in which the size and hemoglobin content of red blood cells remain normal.