@merpreb I spoke with the researcher for Mayo stem cell trials today. They are currently testing the safety of the lung cells they grown in labs (as I told you before) Rather than rely on cells mined from the participants they need to know if the millions they grow (apparently cost effectively) in labs can be safely used. With these trials they are looking more at safety than therapeutic results. It could take a year to determine that lab grown cells are safe. If they pass this safety stage they will start trying them on volunteers, like me. I'm number 13 on their list of volunteers. It looks like I will get a turn at bat. I've kept myself in the best shape for this opportunity. Of course, the likely result is the cells won't even partially reverse my emphysema. That is what happened to most subjects (but not all) in all earlier trials. However, I'm sure they will make adjustments, in each subsequent trial, to find a way to unlock that rejuvenating door, and maybe I'll get lucky. A slim chance is infinitely better than no chance. Even a "placebo effect" would be appreciated. As I get older I question if a placebo benefit is "just in your head" or if psychological changes can sometimes trigger organic results.