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Hartwell, Leland Harrison

(Encyclopedia)Hartwell, Leland Harrison, 1939–, American cell biologist, b. Los Angeles, Ph.D. Massachusetts Institute of Technology, 1964. He is a professor at the Univ. of Washington (1968–) and since 1997 ha...

Hershko, Avram

(Encyclopedia)Hershko, Avram, 1937–, Israeli biochemist, M.D. Hebrew Univ.–Hadassah Medical School, Jerusalem, 1965, Ph.D. 1969. Hershko has been a professor at the Rappaport Faculty of Medicine at the Technion...

Hoffmann, Jules Alphonse

(Encyclopedia)Hoffmann, Jules Alphonse, 1941–, French biologist, Ph.D. Univ. of Strasbourg, 1969. Hoffmann was a researcher at the French National Center for Scientific Research, Strasbourg, from 1974 to 2009. In...

Goldstein, Joseph Leonard

(Encyclopedia)Goldstein, Joseph Leonard gōldˈstīn [key], 1940–, American molecular geneticist, b. Sumter, S.C., M.D. Univ. of Texas at Dallas, 1966. He worked as a biomedical researcher at the National Heart I...

Ciechanover, Aaron

(Encyclopedia)Ciechanover, Aaron, 1947–, Israeli biochemist, M.D. Hebrew Univ.–Hadassah Medical School, Jerusalem, 1974; D.Sc. Technion (Israel Institute of Technology), Haifa, 1982. He has been on the faculty ...

chloroplast

(Encyclopedia)chloroplast klōrˈəplăstˌ, klôrˈ– [key], a complex, discrete green structure, or organelle, contained in the cytoplasm of plant cells. Chloroplasts are reponsible for the green color of almost...

chigger

(Encyclopedia)chigger, minute, six-legged, reddish larva of the harvest mite, one of various red bugs widely distributed throughout the world and common in the S United States. Attaching itself by its mouthparts to...

Sancar, Aziz

(Encyclopedia)Sancar, Aziz, 1946–, Turkish-American biochemist and molecular biologist, M.D. Istanbul Univ., 1969, Ph.D. Univ. of Texas at Dallas, 1977. From 1977to 1982, Sancar was a researcher at the Yale Schoo...

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 throat. Relief t...

thalamus

(Encyclopedia)thalamus thălˈəməs [key], mass of nerve cells centrally located in the brain just below the cerebrum and resembling a large egg in size and shape. The thalamus is a routing station for all incomin...