US lifts some restrictions on embryo stem cells

(AP) -- When President Barack Obama eased limits on taxpayer-funded embryonic stem cell research, the big question became how far scientists could go. Friday, the government answered: They must use cells culled from fertility ...

Planarian genes that control stem cell biology identified

Despite their unassuming appearance, the planarian flatworms in Whitehead Institute Member Peter Reddien's lab are revealing powerful new insights into the biology of stem cells—insights that may eventually help such ...

Researchers turn back the clock on human embryonic stem cells

Johns Hopkins scientists report success in using a cocktail of cell-signaling chemicals to further wind back the biological clock of human embryonic stem cells (ESCs), giving the cells the same flexibility researchers have ...

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