Word: cellular
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Dates: during 2000-2000
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...communication between certain neurons, shedding new light on how the mind works. Another toxin extracted from Spider Pharm venom in 1995 by Kenton Swartz at the National Institutes of Health (named hanatoxin after Swartz's daughter) is being used to probe the function of proteins that are located on cellular membranes and have been implicated in diseases ranging from diabetes to epilepsy...
James E. Davis, who is a senior lecturer on chemistry and chemical biology and on molecular and cellular biology, says he stays because he enjoys teaching, no matter who the students...
...completely decoded. All our dreams at the time centered on the next big objective--finding how the four letters of the DNA alphabet (A, T, G and C) spell out the linear sequences of amino acids in the synthesis of proteins, the main actors in the drama of cellular life. As it turns out, the essence of the genetic code and of the molecular machinery that reads it was solidly established by 1966, only 13 years after Francis Crick and I discovered the double helix...
...counts, I came away reassured. While the brain stores memories in a number of areas, it is the frontal lobe that retrieves them and puts them to work. For all its data-crunching power, the frontal lobe is a fragile thing. Everything from fatigue to hormonal changes to simple cellular wear and tear can cause it to falter. "Frontal-lobe processes change in all people as they age," says Scott Small, assistant professor of neurology at Columbia and a research colleague of Mayeux's. "The bell curve shifts uniformly...
...most unshakable part of this belief is that the neurons used to build these memory circuits are a depletable resource, like petroleum or gold. We are each bequeathed a finite number of cellular building blocks, and the supply gets smaller each year. That is certainly how it feels as memories blur with middle age and it gets harder and harder to learn new things. But like so many absolutes, this time-honored notion may have to be forgotten--or at least radically revised...