Healthy-MSCs, OOT-MSCs and ALL-MSCs expressed typical MSC markers, including CD29, CD44, and CD90, but no hematopoietic cell markers (CD14, CD19, CD34 or CD45) or the MHC class II molecules, including HLA-DR (Fig. 1). The gene discussed is ITGB1; the disease is acute lymphoblastic leukemia.