So in this process of phagocytosis some type of relatively large molecule such as a macromolecule or even a bacterium binds to specific protein receptors found on the cell membrane. Once that protein receptor binds to the receptor on that molecule, let's say our bacteria the cell recognizes the material protrudes outward and engulfs that object. And once inside that vesicle, because it's so large, is known as the phagosome. Now, once the phagosome is formed, eventually it basically fuses with the lysosome of our body, of our cell. And once they fuse, the lysosome contains special type of hydrolytic enzymes that can basically degrade and digest our materials. So let's suppose we have a bacterial cell.