Fig. 4From: Optimizing interleukin-2 concentration, seeding density and bead-to-cell ratio of T-cell expansion for adoptive immunotherapyCPD results of T cells in various B:C ratio groups. Over the culture period, the highest B:C ratios generated the best expansion results (a). On day 28, a direct correlation between the number of beads and the expansion potential was seen (b)Back to article page