S100A9 and neoplasm: Figure 1 shows the time to palpable tumor for C57BL/6 TRAMP mice in grey (n = 42) and the TRAMP S100A9−/− animals (n = 34) in black. The median time to palpable tumor (MT) was increased in TRAMP S100A9−/− animals from 26 to 29 weeks (p = 0.0008; Gehan-Breslow-Wilcoxon test).