CD4 and neoplasm: Consistent with the increased tumor burden observed in ΔdblGATA and Δdbl-IL5Tg mice, we found several different immune cell populations were elevated in the lungs of these mice 2 weeks after tumor cell injection compared to naïve tumor-free mice, including neutrophils, alveolar macrophages, CD8+ T cells, CD4+ T cells, and Tregs, whereas there was no significant difference at this timepoint between naïve and EO771-bearing WT or IL5Tg mice (Supplemental Figure 6).