In this blog, Dr. Orchard indicates favorable results. http://www.scientificblogging.com/news/risk_assessment_for_stem_cell_transplantation_in_osteopetrosis_patients If this is true, one might draw some positive with a non-invasive food supplement, AFA, that when taken in a high concentrate enables us to release 25% more adult stems cells from our bone marrow to help us heal ourselves. Maureen