Cytotoxicity of the CTLs against autologous primary myeloma plasma cells.

Shown are cytotoxicity of CTL lines generated from patients 1 (▪), 2 (■), 3 (▤), and 4 (⊡) against autologous primary myeloma plasma cells (Auto-PCs), PBMCs, purified B cells or EVB-transformed B cells, and K562. The E:T ratio was 20:1. Data are expressed as the mean ± SEM of 2 independent experiments.