So this area describes when our DNA molecule is essentially in this structure, in that form. And this area describes where our DNA molecule has melted, has dissociated. So let's suppose we have our solution of DNA. We heat that solution to, let's say, 80 degrees Celsius. And what we know is from this graph, all the DNA molecules in our solution will be dissociated. Now, what happens if I bring that temperature back down to, let's say, 60 degrees Celsius?