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Schekman, Randy Wayne

(Encyclopedia) Schekman, Randy Wayne, 1948–, American cell biologist, b. St. Paul, Minn. Ph.D. Stanford, 1974. He is a professor (since 1976) at the Univ. of California, Berkeley, and an investigator…

blindness

(Encyclopedia) blindness, partial or complete loss of sight. Blindness may be caused by injury, by lesions of the brain or optic nerve, by disease of the cornea or retina, by pathological changes…

gangrene

(Encyclopedia) gangrene, local death of body tissue. Dry gangrene, the most common form, follows a disturbance of the blood supply to the tissues, e.g., in diabetes, arteriosclerosis, thrombosis, or…

gingivitis

(Encyclopedia) gingivitisgingivitisjĭnˌjəvīˈtĭs [key], inflammation of the gums. It may be acute, subacute, chronic, or recurrent. The gums usually become red, swollen, and spongy, and bleed easily.…

thirst

(Encyclopedia) thirst, sensation indicating the body's need for water. Dry or salty food and dry, dusty air may induce such a sensation by depleting moisture in the mucous membranes of the mouth and…

Benedict's solution

(Encyclopedia) Benedict's solution, deep-blue alkaline solution used to test for the presence of the aldehyde functional group, −CHO. The substance to be tested is heated with Benedict's solution;…

Best, Charles Herbert

(Encyclopedia) Best, Charles Herbert, 1899–1978, Canadian physiologist, b. West Pembroke, Maine. With F. G. Banting and J. R. R. Macleod he discovered (1921) the use of insulin in the treatment of…

birth defects

(Encyclopedia) birth defects, abnormalities in physical or mental structure or function that are present at birth. They range from minor to seriously deforming or life-threatening. A major defect of…

acromegaly

(Encyclopedia) acromegalyacromegalyăkˌrōmĕgˈəlē [key], adult endocrine disorder resulting from hypersecretion of growth hormone produced by the pituitary gland. Since the bones cannot increase in…

Yalow, Rosalyn Sussman

(Encyclopedia) Yalow, Rosalyn Sussman, 1921–2011, American medical physicist, b. New York City, Ph.D. Univ. of Illinois, 1945. As a researcher at the Bronx Veterans Administration Hospital (from 1947…