Phagocytosis Actin-mediated specialized processes ... Vesicles generated during apoptosis by pinching off of the dying cell membrane. Yersinia enterocolitica A species of gram-negative bacteria.
In both phagocytosis and macropinocytosis ... Caveolae are small invaginations of the cell's plasma membrane. Under the electron microscope, caveolae look to be flask-shape pits about 50-80 ...