And these are known as G proteins. And in this case this is known as a small G protein. Now the final question is once this pathway takes place and accomplishes what it actually wanted to accomplish so those cells divide and grow, how exactly does our body basically shut off this pathway? Because if the body isn't able to shut off the pathway, that can lead to many different types of negative effects, for instance, cancer cells. And so there are two ways by which our body actually deactivates this process. Number one is because this process actually involves many kinases.