So these are the two of our so that should actually be not a B but a beta. So this should be a beta. So we have two of these orange betas, we have two of these green gammas and then we have these red alphas and we basically removed these purple A's and those blue BS. Now once we form the fiber and monomer, what exactly happens next? Well by cleaving and removing these two sections, and these two sections we basically expose a very important section of that fibrin molecule. And because we expose that section of our fibrin it activates that fibrin.