OKINAWA INSTITUTE OF SCIENCE AND TECHNOLOGY (OIST) GRADUATE UNIVERSITY IMAGE: THE GRAPH ABOVE SHOWS THAT THE AGE OF A PERSON CAN BE ROUGHLY IDENTIFIED BY MEASURING ONLY FOUR METABOLITES IN THEIR SALIVA. THE BLUE DOTS EACH REPRESENT ONE PERSON IN THE 27-33 AGE GROUP, WHEREAS THE RED DOTS EACH REPRESENT ONE PERSON IN THE 72-80...
