"The something in the blood" that some scientists have made reference to, will be possible to track down, but it will take a good deal of biochemical expertise and time. This is why I am not worried we didn't hear anything about it at the Stanford symposium. EV's in general are extremely difficult to isolate. Sure, there are protocols out there, but doing it well and having a pure prep takes a lot of experimentation. Ron Davis alluded to this during his NIH talk in April 2019. My sense is they are working on it, but it will take someone a year to get good preps on 20 people, then they will go about the process of trying to identify the peptide or RNA molecule that could be triggering changes in target cells when the target cells are hydrolyzing ATP at a rate that is greater than the ATP required for just cell survival alone.