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Luria, Salvador Edward

(Encyclopedia) Luria, Salvador Edward, 1912–1991, American physician, b. Turin, Italy, M.D., Univ. of Turin, 1935. He conducted research and taught at the Institute of Radium in Paris (1938–40),…

Los Alamos

(Encyclopedia) Los AlamosLos Alamoslôs ălˈəmōsˌ, lŏs [key], uninc. town (1990 pop. 11,455), seat of Los Alamos co., N central N.Mex. It is on a long mesa extending from the Jemez Mts. The U.S.…

Muller, Hermann Joseph

(Encyclopedia) Muller, Hermann JosephMuller, Hermann Josephmŭlˈər [key], 1890–1967, American geneticist and educator, b. New York City, grad. Columbia (B.A., 1910; Ph.D., 1916). A student of Thomas…

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…

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…

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…

Determining the Sex of Offspring

The Question: My wife and I have argued this, and I've had trouble finding the answer. Which sex carries the genes to determine the sex of the offspring...…

2007 Nobel Prize Winners

Related Links Nobel Prize History Nobel Prize History Quiz Nobel Peace Prize Winners Quiz Physics: Albert Fert (France)…

Roundup of Recent Science Discoveries, 2003

—Borgna BrunnerVital Stats of the Universe In one of the most important cosmological discoveries in years, NASA scientists have captured the most precise image of the universe, shedding light on…

Alzheimer's disease

(Encyclopedia) Alzheimer's diseaseAlzheimer's diseaseălsˈhīˌmərz, ôls– [key], degenerative disease of nerve cells in the cerebral cortex that leads to atrophy of the brain and senile dementia and,…