IL33 and neoplasm: Due to the increased expression of degranulation markers in eosinophils after IL-33 treatment in vitro (Figure 2a) and in tumors of BALB/c and ∆dblGATA-1 mice (adoptively transferred with eosinophils) in vivo (Figure 2b and Supplementary Fig. 5), we investigated a possible mechanism by which eosinophils could contribute to tumor growth reduction that is associated with degranulation.