And because they're stacked on top and they're linear, they're parallel with respect to each other, they will have a great potential of bonding to other beta pleated sheets via non covalent bonds. So recall that beta pleated sheets have a high propensity, high potential for forming bonds with other beta pleated sheets. Therefore, the beta pleated sheets of one protein can interact with the beta sheets of another protein and that can form these aggregate molecules. So, if this protein that normally appears in the brain cells of our body transforms misfolds into this protein, it can basically form aggregates with other proteins and that will eventually form even larger fibers, as we'll see in just a moment. So to see what we mean, let's take a look at the following diagram. Let's suppose some type of mutation took place or some type of event happened that eventually led to the formation of these molecules.