TNFRSF1B and neoplasm: Yet, similar to the results shown in Figure 4B–D, Ki67+ cell clusters were abundantly found in the tumor in LPS-treated TNFR2−/− mice at 14 dpi (Figure 6D,d1–d3), whereas the scattering of Ki67+ cells was observed in the tumor of LPS-treated TNFR2+/− mice (Figure 6C,c).