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Røy thinks the microbial community is so sparse, and the metabolic rates so low, that the nutrient levels probably represent the bare minimum required to keep cellular enzymes and DNA working. "It looks like we have reached the absolute lower limit for the metabolism of cells," he says.
[...] when Morono's team treated the cells to what he calls a "luxury meal" of glucose and other nutrients, most of them incorporated some food – suggesting that they are, in fact, alive. "Their lives are just very slow compared with ours," he says
Because of their remarkably slow metabolic rates, individual cells may have extremely long life spans, says Røy. The cells Morono's team examined looked intact, yet it would take each of them hundreds or thousands of years to generate enough energy to go through cell division and produce daughter cells. That means some of Morono's cells could be thousands of years old.
Originally posted by ADVISOR
Sounds like they found they key to suspended animation, imagine hibernation chambers for space travel. Slowing the metabolism to such a rate could do wonders for longevity.