Now, salting out is basically the process by which we separate our protein based on its ability to form a precipitate at a specific type of salt concentration. So, for example, one protein can precipitate at a concentration of salt, let's say around one molar, but another one will form a precipitate only at two molar and so forth. So we can use salting out to basically separate different proteins. Now, gel filtration chromatography is a technique that uses the size factor of proteins. It can basically separate the proteins based on size. And in gel filtration chromatography, we have this tube, and inside the tube, we have these special beads.