Has there ever been any evidence throughout the history of science of reanimating dead cells?
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An accurate answer to this depends on what you mean by dead. Death at the cellular level is sometimes difficult to determine especially for some single celled organisms. Spores, cysts, unfertilized seeds and egg cells are all metabolically inactive to one degree or another. Some instances of spores surviving literally millions of years have been demonstrated (the spores were locked in amber inclusions). But under the right conditions, these can all become metabolically active or alive again.
In the more conventional sense though, the answer would be no. Once something is dead by a reasonable standard, it is dead. Life from non-life only appears to have occurred once in the history of life on this planet. After that, every living cell and organism is descended from a previously living one.
In the more conventional sense though, the answer would be no. Once something is dead by a reasonable standard, it is dead. Life from non-life only appears to have occurred once in the history of life on this planet. After that, every living cell and organism is descended from a previously living one.