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differentiation
(Encyclopedia)differentiation, in biology, series of changes that occur in cells and tissues during development, resulting in their specialization. This, in turn, permits a greater variety of organisms. In plants, ...Rogers, Roy
(Encyclopedia)Rogers, Roy, 1911–98, American Western film star, b. Cincinnati, Ohio, as Leonard Franklin Slye. The guitar-strumming Rogers succeeded Gene Autry as America's favorite singing cowboy in movies of th...nucleic acid
(Encyclopedia) CE5 Replication of strands of DNA CE5 nucleic acid, any of a group of organic substances found in the chromosomes of living cells and viruses that play a central role in the storage and replica...Alzheimer's disease
(Encyclopedia)Alzheimer's disease ălsˈhīˌmərz, ôls– [key], degenerative disease of nerve cells in the cerebral cortex that leads to atrophy of the brain and senile dementia and, ultimately, death. The disea...O'Brien, Flann
(Encyclopedia)O'Brien, Flann, pseud. for Brian Ó Nualláin or O'Nolan ō nōˈlən [key] 1911–66, Irish novelist and political commentator. Born in County Tyrone and raised in Dublin, he studied at University Co...Casanova de Seingalt, Giovanni Giacomo
(Encyclopedia)Casanova de Seingalt, Giovanni Giacomo kăzənōˈvə, Ital. jōvänˈnē jäˈkōmō käzänōˈvä dā sāngältˈ [key], 1725–98, Venetian adventurer, author, and celebrated libertine. He studied...Mance, Julian Clifford, Jr., “ Junior ”
(Encyclopedia) Mance, Julian Clifford, Jr., “Junior,” 1928-2021, American jazz pianist and composer, b. Evanston, Illinois. Taught to play boogie and ...Tsien, Roger Yonchien
(Encyclopedia)Tsien, Roger Yonchien, 1952–2016, American biochemist, b. New York City, Ph.D. Cambridge, 1977. Tsien was a researcher at Cambridge (1977–81) and a professor at the Univ. of California, Berkeley (...Trinity , doctrine in Christianity
(Encyclopedia)Trinity [Lat.,=threefoldness], fundamental doctrine in Christianity, by which God is considered as existing in three persons. While the doctrine is not explicitly taught in the New Testament, early Ch...Fitzgerald, Ella
(Encyclopedia)Fitzgerald, Ella, 1917–96, American jazz singer, b. Newport News, Va. Probably the most celebrated jazz vocalist of her generation, Fitzgerald was reared in Yonkers, N.Y., moving after her mother's ...Browse by Subject
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