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Researchers extract complete mitochondrial genomes from mammoth coat-hair shafts

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Ability to culture hair cells holds promise for research, regeneration

Accidents at university labs working with pathogens suggest an imperfect safety system

Salmonella grown in space shows altered gene expression and is deadlier in mice

German stem cell researchers say a colleague's claims about an adult stem cell heart therapy are scientifically flawed and politically motivated

Photographer Jill Greenberg captures the essence of primativity in our simian cousins

Mitochondrial energy stores allow cells to survive when stressed, and offer clues on how calorie restriction increases lifespan

A rumored candidate denies being under consideration

A synthetic gene switch allows eukaryotic cells to recall exposure to a set stimulus

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Flu strains migrate widely during summer off-season and evolve by swapping genes with other far-off strains