ETS1 and neoplasm: To determine the role of ETS1 in tumor progression in vivo, we used SGC7901-H cells to establish a stable ETS1-silenced cell line by lentiviral-mediated shRNA (Fig. S5b), and then the ETS1-silenced SGC7901-H cells were intraperitoneally injected into BALB/c nude mice, followed by the bioluminescence imaging.