And we see that a single gap junction consists of these two hemichannels, also known as connections that are connected end to end to basically form this single gap junction. Now, if we examine each one of these hemichannels, each one of these hemichannels actually consist of six individual polypeptide chains we call connections. And these connections are basically formed to form a hexamer, which basically means we have six individual units within that hemichannel. Now, cell number one produces hemichannel number one, and cell number two produces hemichannel number two, and then they connect them to form that gap junction. And so that's the final difference between these voltage gated and ligandgate on channels and gap junctions. Now, what exactly?