Figure 1. PVT1 and exosome secretion-associated factors are increased in PC cell lines. (A) The expression of PVT1 in PC cell lines. (B) The mRNA expression of YKT6 in PC cell lines. (C) The expression of RAB7 in PC cell lines. (D) The expression of VAMP3 in PC cell lines. *P < 0.05, data are expressed as the mean ± SD.