And we also have these digestive lysosomes, these tiny vesicles that carry digestive enzymes as well as an acidic environment. Now, what the macrophage does is it engulfs our pathogen, in this case our bacteria, and it creates this vacuole within which we have that bacterial cell. And some of these lysosomes fuse with this stagosome. And now this stackosome contains these digestive enzymes and acidic environment, as well as the bacterial cell. And inside the phagosome, we begin the process of the breakdown and digestion of that bacteria. So the macrophage essentially engulfs that bacterial cell and begins the process of digestion.