A: Increased CD8+ T cell proliferation in the PLGA/BCMA-CTL in response to HLA-A2+ U266 MM cells (Day 6 > Day 4). B: Increased induction of total CD45RO+ memory CTL by PLGA/BCMA peptide than by free peptide, measured post-3, post-4 and post-5 cycles of stimulation. C: Summary of three independent experiments (N=3) demonstrating increased memory CTL induction by PLGA/peptide than by free peptide, measured post-2 and post-4 cycles of stimulation. D: Increased level of central memory and effector memory CTL generation by stimulation with PLGA/peptide than free peptide, measured post-1 and post-3 cycles of stimulation. Increased maintenance of central memory cells was detected in BCMA-CTL generated by PLGA/peptide than free peptide, measured post-5 cycles of peptide stimulation.