PCBP1 and infection: In addition, the level of EV71 VP1 protein was increased as the infection time increased (Fig. 6E, lanes 3, 5, and 7), but further enhanced by over-expression of PCBP1 (Fig. 6E, left panel, lanes 4, 6, and 8) and reduced by knocked-down of PCBP1 (Fig. 6E, right panel, lanes 4, 6, and 8) in a time-dependent manner.