Supplier Page from United States Biological for Stromal Cell Derived Factor 1 beta, Recombinant, Mouse (SDF1b, CXCL12, PBSF, Pre-B Cell Growth-stimulating Factor, hIRH, Chemokine (C-X-C Motif) Ligand 12b, TPAR1, SCYB12, TLSF-b)