Someday we are going to have to talk about the immune response stuff. I did take an immunosupressant in a trial study for 10 years. Mayo clinic got me into the trial. I have four immune disorders, did have Mono, and a host of illness before all these presented that I currently have. During the trial, I stayed healthy, got my hair back. The Med I took, stopped my immune system from attacking myself, but didn't weaken me enough that I could not fight infection. I still have alot of questions, since I seem to be going down hill. Glad to hear these dicussions about the immune response. ginnie