NUDT21 and neoplasm: Moreover, NUDT21 shRNAs or control shRNA transfected BGC-823 cells (designated as BGC-823-sh-NUDT21#1, sh-NUDT21#2, and sh-ctrl respectively) were also injected subcutaneously into the dorsal side and into tail vein respectively to examine the effect of NUDT21 on tumor growth and metastasis in vivo. Concordantly, both BGC-823-sh-NUDT21#1 and BGC-823-sh-NUDT21#2 derived tumors grew much slower than the BGC-823-sh-ctrl tumors (Figure 3E).