And then we once again remove the pellet, we take the supernatin, we expose it to yet another centrifugation process, and now we increase the value of the acceleration to 100,000 GS. And what that does is it basically creates this pellet that now contains very tiny microsomes. And usually inside the supernatin are basically the proteins that we actually want to use. Now, in every step of this process, we basically carry out some type of protein essay for that specific type of protein or enzyme that we actually want to study. And whenever we have whenever we get the highest value for that protein activity, that's the fraction that we actually want to use. That's what the source of protein is that we're going to use.