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 ...

Nov 20, 2008
4.8 / 5 (10) 0

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 ...

Nov 20, 2008
4.3 / 5 (11) 0

Vitamin B1 biosynthesis: Think Rubik's cube

( -- 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.

Nov 20, 2008
4.3 / 5 (7) 0