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Growing Younger With Age — Fortune

With some notable exceptions, normal human cells can copy themselves only a certain number of times before they die. When the cells are young, they divide and multiply with a spring-like flourishing. But eventually, they enter a state that biologist Leonard Hayflick, back in the 1960s, termed “senescence”–a kind of drawn-out nursing-home limbo in which…

via Growing Younger With Age — Fortune

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