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Recently, scientists have been experimenting with telomerase, the enzyme discovered by Blackburn and her colleagues that prevents the telomeres from shortening. It can, in some sense, “stop the clock.” When bathed in telomerase, skin cells can divide indefinitely, far beyond the Hayflick limit. I once interviewed Dr. Michael D. West, then of the Geron Corporation, who experiments with telomerase and claims that he can “immortalize” a skin cell in the lab so that it lives indefinitely.
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Michio Kaku (The Future of Humanity: Terraforming Mars, Interstellar Travel, Immortality, and Our Destiny BeyondEarth)