by Bob Yirka, Medical Xpress Rhesus KL enhances cognition in aged rhesus macaques. Credit: Nature Aging (2023). DOI: 10.1038/s43587-023-00441-x A team of health care specialists and neuroscientists affiliated with several institutions in the U.S., has found that injecting a protein called klotho into older rhesus macaques led to improvements in working memory and their ability to do...