Fig. 4.

Alpha camera quantification of the total activity in each microtumor seen in Fig. 3 as a function of the number of cells. For this range of microtumor sizes (1–400 cells), the binding of ²¹¹At-farletuzumab per cell is relatively constant. Dotted lines indicate the 95% confidence interval for linear regression. The fitted slope was significantly different from non-zero (P-value: 0.0001) and the R-square for the goodness of fit was 0.97.