Effect of Src inhibitor PP2 on the cellular distribution of Cav1. TCN23-19 cells were treated with 2 μM of PP2 for 5 h; afterward, both control and PP2-treated cells were stained for Cav1. The plasma membrane signals were labeled by solid arrows in both treated and untreated cells to illustrate the recovery of Cav1 signal in the plasma membrane of PP2-treated cells. A set of representative images from three experiments is shown. Bar, 5 μm.