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retrovirus

(Encyclopedia)retrovirus, type of RNA virus that, unlike other RNA viruses, reproduces by transcribing itself into DNA. An enzyme called reverse transcriptase allows a retrovirus's RNA to act as the template for th...

Köhler, Georges Jean Franz

(Encyclopedia)Köhler, Georges Jean Franz kōˈlər, Ger. köˈlər [key], 1946–95, German immunologist, Ph.D. Univ. of Freiburg, 1974. He worked (1974–76) with César Milstein at the Laboratory of Molecular Bi...

Wilson, Edmund Beecher

(Encyclopedia)Wilson, Edmund Beecher, 1856–1939, American zoologist, b. Geneva, Ill., grad. Yale (Ph.B., 1878), Johns Hopkins (Ph.D., 1881). He taught at Bryn Mawr (1885–91) and at Columbia (1891–1928), where...

Clemson University

(Encyclopedia)Clemson University, at Clemson, S.C.; coeducational; land-grant; state supported; opened in 1893 as a college, gained university status in 1964. The university includes programs in textile and compute...

phosphorylation

(Encyclopedia)phosphorylation, chemical process in which a phosphate group is added to an organic molecule. In living cells phosphorylation is associated with respiration, which takes place in the cell's mitochondr...

Gurdon, Sir John Bertrand

(Encyclopedia)Gurdon, Sir John Bertrand, 1933–, British biologist, Ph.D. Oxford, 1962. He has been a researcher at Cambridge since 1971. Gurdon was the joint recipient of the 2012 Nobel Prize in Physiology or Med...

taxon

(Encyclopedia)taxon (pl. taxa), in biology, a term used to denote any group or rank in the classification of organisms, e.g., class, order, family. ...

Greider, Carol Widney

(Encyclopedia)Greider, Carol Widney, 1961–, American molecular biologist, b. San Diego, Calif., Ph.D. Univ. of California, Berkeley, 1987. Greider was a researcher and professor at the Cold Spring Harbor Laborato...

sex

(Encyclopedia)sex, term used to refer both to the two groups distinguished as males and females, and to the anatomical and physiological characteristics associated with maleness and femaleness. Sex relates to the t...

atrophy

(Encyclopedia)atrophy ătˈrəfē [key], diminution in the size of a cell, tissue, or organ from its fully developed normal size. Temporary atrophy may occur in muscles that are not used, as when a limb is encased ...
 

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