Figure 3.

Correlation between susceptibility to lysis by SPM-2 plus NK cells (EC₅₀ values) and combined surface antigen density of (CD33 + CD123) on patient blasts. Mean surface densities of CD33 and CD123 were determined for each patient sample. EC₅₀ values were computed for each sample from the dose response curves shown in Figure2. Numerical values were the same as those shown in Table 3.