And that will eventually lead to the death of that cell. And once the cell dies, once again, a macrophage or another phagocytic cell can swim by engulf that dead cell. And that will prevent that infected cell from actually destroying other healthy cells of our body. Now, what about the final mechanism? So, notice, in the intrinsic pathway and the extrinsic pathway, we both used a category of protease proteins known as caspase. The major difference between the final mechanism and these two mechanisms is that this does not actually include a caspase protein.