CXCL12 and T-cell leukemia: The calcium flux assay was performed in human T cell leukemia Jurkat cells incubated with PF-06747143 full-length (FL), PF-06747143-Fab, PF-06747143 F(ab’)2, or isotype control IgG1 antibody in presence of CXCL12 at 8 nM.