The stable A2780cp survivin knockdown cells (80% knockdown) (Fig. 7e) (N = 5) and the vector control cells (N = 5) were intraperitoneally (i.p.)injected into nude mice, similar to the above in vivo tumorigenic assay, to examine the functional role of miR-141 in ovarian cancer cells. Here, BIRC5 is linked to ovarian cancer.