Fig. 3. Cells but not supernatant of stored blood increase MADB106 lung tumor retention. Percentage of lung tumor retention (mean ± SEM) in rats transfused with 14-days-stored packed cells, poststorage washed packed cells, poststorage supernatant from packed cells (supernatant), or saline. n = 22, 4–8 per group. * Significant pairwise difference from the saline control group (protected least significant difference, P < 0.05).