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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...

genetic engineering

(Encyclopedia)CE5 Genetic engineering: Gene-splicing techniques genetic engineering, the use of various methods to manipulate the DNA (genetic material) of cells to change hereditary traits or produce biologica...

embolus

(Encyclopedia)embolus ĕmˈbələs [key], foreign matter circulating in and obstructing a blood vessel. It may be a portion of a clot that has separated from the wall of a vessel (see thrombosis), a bubble of gas o...

Hunt, R. Timothy

(Encyclopedia)Hunt, R. Timothy (Richard Timothy Hunt), 1943–, British biochemist, Ph.D. Cambridge, 1968. Hunt was a researcher at the Albert Einstein College of Medicine, New York City (1968–81) and a professor...

hives

(Encyclopedia)hives (urticaria), rash consisting of blotches or localized swellings (wheals) of the skin, caused by an allergic reaction (see allergy). The swelling is caused by distention of the skin capillaries a...

von Euler, Ulf

(Encyclopedia)von Euler, Ulf, 1905–83, Swedish physiologist and pharmacologist, Ph.D. Karolinska Institute, 1930. He was a professor at the Karolinska Institute from 1930 to 1971. Von Euler won the 1970 Nobel Pri...

Swammerdam, Jan

(Encyclopedia)Swammerdam, Jan yän väˈmərdäm [key], 1637–80, Dutch naturalist. He was a pioneer in the use of the microscope. Before he turned to religious contemplation his chief interest was the study of in...

transducer

(Encyclopedia)transducer, device that accepts an input of energy in one form and produces an output of energy in some other form, with a known, fixed relationship between the input and output. One widely used class...

Basilian monks

(Encyclopedia)Basilian monks bəzĭlˈēən [key], monks primarily of the Eastern Church. They follow the Rule of St. Basil the Great, which has been universal among them since the 7th cent. They have no centralize...

biopsy

(Encyclopedia)biopsy bīäpˈsē [key], examination of cells or tissues removed from a living organism. Excised material may be studied in order to diagnose disease or to confirm findings of normality. Preparatory ...