Hi Angie - welcome to the forum...I had a thymectomy in March, am treated now with IVIg, Imuran and Mestinon - have been on Prednisone but I am not on it now. I am 43 and have a 13 year old. My MG initially affected my speech, swallowing and vision - later my breathing and my limbs. I have never had a breathing crisis. I am interested in doing anything to halt this thing but haven't heard of the treatment that you are talking about involving the bone marrow. I did a google search and found several articles...these seem to be what you are talking about. Both articles are from 2003. It would be interesting to see if there is something more current. Keep us posted.
Thanks,
Gabe

http://www.neurologyreviews.com/dec0...onemarrow.html

http://www.ncbi.nlm.nih.gov/entrez/q...&dopt=Abstract