Scientists have discovered how the amino acid leucine boosts the body’s energy production by protecting key mitochondrial ...

Cells are the basic units of life — but when it comes to cells, if you think basic means simple, think again. Cells are complicated, with many millions of biochemical reactions per second seething ...

Genetic engineers can design and assemble sophisticated gene circuits to program cells with new functions, but important ...

RNA in cells performs an astounding number of functions. Messenger RNA carries the sequences of active genes to cellular machinery that turns it into proteins. And transfer RNA molecules are an ...

How do stem cells know what to become? Nearly three decades after scientists isolated the first human embryonic stem cells, researchers are still working hard to understand precisely how a single, ...