IL15 and neoplasm: Interestingly, similar to previous results with challenge mice (Fig. 4c, d), IL-15 showed a statistical increase in long-term survivors (tumor survivor mice, re-challenge survivor) compared with mice that were re-challenge, but did not survive (tumor survivor mice, re-challenge failure) (Fig. 4e, f, right panel, Supplementary Table 8) and with tumor naïve, tumor bearing mice that also did not survived (Fig. 4e, f, middle panel, Supplementary Table 8).