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Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
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A Nerve-Wracking Discovery
26 March 1998 7:00 pm
Today is the 87th birthday of Sir Bernard Katz, a German-born English physiologist who elucidated how nerve cells transmit signals. Although it was known that neurons release acetylcholine at their terminal ends, Katz discovered while at University College, London, in the early 1950s that the release of this neurotransmitter occurs continuously and spontaneously, although at low levels when neurons are at rest. Moreover, he found that acetylcholine is released in discrete packets, later called vesicles.
In the late 1960s, Katz determined that the amount of acetylcholine in a vesicle was related to the electrical potential at the terminal of an axon--the long extension of a neuron that transmits the impulse. For these discoveries, Katz shared the 1970 Nobel Prize in physiology or medicine with Julius Axelrod of the National Institutes of Health in Bethesda, Maryland, and Ulf von Euler of the Karolinska Institute in Sweden.
[Source: Emily McMurray, Ed., Notable Twentieth Century Scientists (Gale Research Inc., ITP, 1995).]