CD34 and myeloid sarcoma: We also prospectively analyzed the mobilization kinetics of CD34+ cells in MS patients employing granulocyte colony-stimulating factor (G-CSF) and cyclophosphamide, an important topic which had not been studied in detail (21), and we found that the CD34+ cell count increased 26-fold after mobilization, and during large volume leukapheresis the number of CD34+ cells in peripheral blood increased from 51.29 CD34+/μL at the start to 62.3 CD34+/μL at the end.