Now we take that beaker number one and we place it into SDS page. So SDS polyacrylamide gel electrophoresis. So this is our setup, and we have four different wells. Now, well, number one, we label as the Ddatp, because this is step two, where we use the DD ATP. We take the mixture and we place it into well number one, lane number one. And we allow these to separate based on their masses.