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Young blood may hold the long-sought cure for the decline of the aging brain, according to research that showed injections of juvenile mouse blood boosting learning and memory in older rodents, scientists said Sunday.Multiple blood transfusions from 3-month-old mice, the equivalent of 20 to 30 years old in humans, yielded improvements in the brain structure and function of 18-month-old rodents – about 56 to 69 in human years, a team wrote in the journal Nature Medicine.The team claimed to be the first to show an effect of young blood on cognition, though other studies have demonstrated rejuvenating effects on adult stem cells.In humans and in mice, the hippocampus is particularly vulnerable to aging.
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