What Are Extra Cellular Vesicles in the Brain?

Extra cellular vesicles can be found all throughout the body, but there are a lot of questions about what they do. Two teams were looking at these, these extra cellular vessicles that were released by various nurons to find out what they were doing. They independently found that the vesicles that are released by neurons in both flies and mice contain this arcogene. This gene descends from an ancient class of ancestral genes, types of retro transposons. It's very interesting in that they can behave almost like independent infectious agents.