Tumor lysate stimulates a saturable proliferative response. Graphs show response to Log₁₀ changes in tumor lysate, from 100 μL to 0.01 μL. (A) δ-cpm represents counts per minute minus background. (B) The graph shows the cpm/background = stimulation index. DC pulsing with tumor lysate was tested in all 12 patients, and saturability of this pathway was tested in patient 2. Tumor lysates were made from patients 1, 6, and 7, and results showed no differences using different autologous or allogeneic tumor lysates in the same or different patients.