TIAM1 and neoplasm: Consistent with in vitro experiments, IHC staining of xenograft tumor sections further showed that after Bxpc-3 knockdown, the expression levels of Tiam1 and Ki67 were downregulated in the sh-Tiam1 group, while after high expression of MIAPaca-2, the overexpression levels of Tiam1 and Ki67 were upregulated (Fig. 2e–f).