VASP and cancer: For example, MCF‐7 breast cancer cells have been immunolabeled with 4′‐6‐diamino‐2‐phenylindole (DAPI, blue) to visualize the cell nucleus, and with antivasodilator‐stimulated phosphoprotein (VASP, green) antibodies to visualize lamellipodia formation (Figure 2E).[176, 177] This dual labeling is crucial since cancer typically leads to deregulation of the cell cycle and abnormalities in DNA accumulation, promoting the lamellipodia formation by actin polymerization, which is closely related to cell migration and invasion in cancer.