Archive: 11/20/2008

Lactic acid found to fuel tumors

A team of researchers at Duke University Medical Center and the Université catholique de Louvain (UCL) has found that lactic acid is an important energy source for tumor cells. In further experiments, they discovered a new ...

dateNov 20, 2008 in Cancer
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Probing question: What is a molecular clock?

It doesn't tick, it doesn't have hands, and it doesn't tell you what time of day it is. But a molecular clock does tell time -- on an epoch scale. The molecular clock, explained S. Blair Hedges, is a tool ...

dateNov 20, 2008 in
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Vitamin B1 biosynthesis: Think Rubik's cube

(PhysOrg.com) -- A key enzyme in the biosynthesis of vitamin B1 has somehow evolved the ability to perform a complex series of some 15 to 20 steps, report two Cornell chemists.

dateNov 20, 2008 in
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