symptoms related to the abnormal loss of body fat from some areas of the body, most often the face, extremities, and butt, and accumulation of body fat in other areas, generally the back of the neck, shoulders, breasts, and stomach. See metabolic toxicity.
body fluids The total amount of water in the human body varies from 50 percent of body weight in obese individuals to 70 percent in the non-obese. The principal compartments for body fluids are intracellular and extracellular. A much smaller segment, the transcellular, includes fluid in the tracheobronchilial tree, the gastrointestinal tract, the bladder, cerebrospinal fluid, and the aqueous humor of the eye. of the various liquids found in the human body, such as blood, breast milk, cervical secretions, saliva, semen, sputum, sweat, tears, urine, and vaginal secretions, only blood, breast milk, semen, and vaginal secretions have been found to contain concentrations of HIV high enough to infect another person. Saliva, sweat, tears, and urine have not been shown to transmit HIV.
body mass index (BMI) An index used to judge the relation between a person's height and weight. The BMI is a person's weight in kilograms divided by height in meters squared. The resulting number correlates strongly with total body fat in adults. The National Heart, Lung and Blood Institute has a quick BMI calculator at http://www.nhlbisupport.com/ bmi/bmicalc.htm boil An abscess or furuncle, which is an acute circumscribed inflammation of the subcutaneous layers of the skin glands or hair follicles. Boils can be painful as a result of the pressure from the buildup of fluid in the abscess. Boils are most commonly due to localized infections with staphylococci.
bone marrow The inner, spongy substance in the center of the bones that produces all of the red blood cells (erythrocytes), most of the white blood cells (leukocytes), and all of the platelets (thrombocytes). It is now believed that all blood cells derive from primitive stem cells in the bone marrow. Damage to the bone marrow makes an individual far more susceptible to infections. Bone marrow is located throughout the skeletal system.
Bone marrow plays a significant role in the development, diagnosis, and treatment of cancer. Bone marrow can be withdrawn (by placing a needle in the hip bone) and analyzed to detect abnormalities in the production of red blood cells, white blood cells, or platelets.
bone marrow depression See bone marrow suppression.
bone marrow suppression Bone marrow suppression (or depression) is a condition characterized by the decreased ability or inability of the bone marrow to make white blood cells, red blood cells, and platelets. Such reductions result in anemia, bacterial infections, and spontaneous or excess bleeding. Bone marrow suppression is a side effect of many anticancer and antiviral drugs and a
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