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"Professor Amy Wagers announced last year that that the blood-based protein GDF11 could reverse the effects of ageing in the hearts of old mice. Now, she and Professor Lee Rubin say it has a similar impact on the animals' brain and muscles.               After circulating the protein-rich blood of young mice through mice equivalent in age to a 70-year-old human, the scientists observed improvements in the older rmice's ability to exercise and to engage their olfactory system to detect smells.               GDF11 is also present in the blood of humans. The scientists believe clinical trials could demonstrate the protein's effectiveness in treating humans with age-related heart, brain or muscle impairment. They say they hope trials can get underway within five years."^^<http://www.w3.org/2001/XMLSchema#string>
<http://uk.reuters.com/video/2014/05/05/blood-protein-rejuvenates-brain-and-musc?videoId=312835184>