So to basically prevent a second nearby healthy cell from being damaged, that dying cell will want to close off these gap junctions. And that's exactly where these different processes come into play to close off that gap junction. Now, finally, let's move on to the functionality of gap junction. So there are three important functions that we're going to take a look at function number one, intercellular communication. Function number two, cell nourishment. And function number three, embryological development.