Researchers from Harvard University have recently discovered a protein thought only to be used in the womb in elderly subjects. This protein, which they are calling REST, protects the fetal brain during development and was previously thought to disappear after birth. However, their study shows that elderly adults without Alzeimer’s disease have a high level of this protein. It will be interesting to observe what types of therapies come from this discovery.

Here is the article:   http://www.nature.com/nature/journal/vaop/ncurrent/full/nature13163.html