TREM1+-cells were enriched in poly-morphonuclear PMN (up to 75%) and Mφ (up to 15%) fractions, and at a lesser degree were observed in the microglia fraction (up to 3%) following three weeks of the tumor development (Figure 3B, G for TRP and GL261 glioblastoma models, respectively). The gene discussed is TREM1; the disease is neoplasm.