Standard-aging mice showed expected reduced speed and diminished memory as they aged. Then researchers fed the mice two doses of blood taken from human teenagers.
Over a three week period the transfusions produced new brain cells and gave the mice greater speed, agility and reaction times.
At first blush this seems like a big break-thru but remember folks we are talking about taking the blood from young people and pumping it into old people....gosh, wonder where this could lead?