Apatient with muscular dystrophy starts to receive stem cells that generate muscle tissue. which is the best prediction of what will happen to the patient's muscle function?

It will have little impact in the long run. Muscular dystrophy tends to interfere with the formation of muscular tissue, specifically it causes problems with the manufacturing of proteins necessary to maintain muscular tissue. This procedure would mean a temporary improvement in the subjects condition, but does not seem to provide a true permanent solution. Repetitive stem cell therapy may be able to slow down the conditions progression though.