Image removed due to copyright considerations Image removed due to copyright considerations Yellow indicates the location of myosin II tethered to the actin matrix in a migrating cell. o Actin polymerization generally occurs at the protruding membrane of a migrating cellYellow indicates the location of myosin II tethered to the actin matrix in a migrating cell.� Actin polymerization generally occurs at the protruding membrane of a migrating cell. Image removed due to copyright considerations. Image removed due to copyright considerations