Figure 3

Relative tumor volume as a function of time after irradiation for eight tumor cell lines responding to five protocols. Tumor volume is expressed as the log of the ratio of the volume of irradiated cells compare to unirradiated cells at specific post-irradiation times. Each panel represents response of one of eight cell lines to five different treatment protocols as shown in the legend. Data points are the modal values of 6 to 13 tumors. Where all tumors did not regrow there is an arrow above the final point that indicates modal value was measured using only the tumors that regrew. The two responses for SW1222 cells at 8 × 2 and 1 × 15 show a dotted line where the value for modal Specific Growth Delay are portrayed using less than a majority of tumor the did regrow.