Summary:  UCSF scientists discover a protein in young blood that rejuvenates an aging brain. [This article was updated on March 26, 2018 and first appeared on LongevityFacts. Author: Brady Hartman. ] Scientists have long been searching for the rejuvenating factors in young blood and put it in pill form for widespread public use. A team of researchers led by Saul Villeda, Ph.D., an assistant professor … Continue reading Brain rejuvenating protein found in young blood