Science

Under-fire researcher says results are valid

Under-fire researcher says results are valid

TOKYO — The Japanese scientist accused of falsifying data in a widely heralded stem-cell research paper said on Wednesday the results are valid despite mistakes in their...

Gallery: UK scientists make body parts in lab

UK scientists make body parts in lab

LONDON — In a north London hospital, scientists are growing noses, ears and blood vessels in the laboratory in a bold attempt to make body parts using stem cells.

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