porkchop_d_clown (39923) writes "When Hendrikje van Andel-Schipper died in 2005, she was the oldest woman in the world. [New Scientist reported Wednesday] that, at the end of her life, most of her white blood cells had been produced by just two stem cells — implying the rest of her blood stem cells had already died, and hinting at a possible limit to the human life span."
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