So blue means inactive zymogen and red means fully active. And so once these two interact, they go on to activate this one into its fully functional and active factor ten. Now, once we form factor X, factor ten basically combines and interacts with another protein called factor five. And once they form that complex, that basically goes on and activates another important molecule we call prothrombin. And this is what we spoke of earlier. So basically, prothrombin is activated.