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Biological immortality refers to a stable or decreasing rate of mortality from cellular senescence as a function of chronological age. Various unicellular and multicellular species may achieve this state either throughout their existence or after living long enough. A biologically immortal living thing can still die from means other than senescence , such as through injury or disease. This definition of immortality has been challenged in the new Handbook of the Biology of Aging , [ 1 ] because the increase in rate of mortality as a function of chronological age may be negligible at extremely old ages , an idea referred to as the late-life mortality plateau . The rate of mortality may cease to increase in old age, but in most cases that rate is typically very high. [ 2 ] As a hypothetical example, there is only a 50% chance of a human surviving another year at age 110 or greater. The term is also used by biologists to describe cells that are not subject to the Hayflick limit .
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A couple of months ago, a photograph was hungrily circulated around gossip magazines and websites, and at a glance you would have had trouble explaining why. It showed an ordinary-looking woman in her mid-40s, out shopping in California, her specs on, cardigan buttoned. The clue was in the picture of Madonna that ran beside it. The anonymous woman was identified as the singer's younger sister, Melanie Henry, and readers were encouraged to compare and contrast. The difference was striking.
Your Spotify download should start within seconds, if it doesn't, restart the download . 1. Download Spotify Save and open the zip file. 2. Run the Spotify Installer Double click on the Install Spotify application. 3. Start Spotify Start Spotify and log in with your e-mail or Facebook account. 4. Enjoy the music!