Here is a link to an abstract with an update about advances in stem cell mobilization:  Update on clinical experience with AMD3100, an SDF-1/CXCL12-CXCR4 inhibitor, in mobilization of hematopoietic stem and progenitor cells.

Interpreting this is beyond my pay grade!  Best I can tell, AMD3100 is a new stem cell mobilizer, with possible benefits as a therapy agent when used against certain forms of leukemia.

Feel good and keep smiling!  Pat