And so, eventually we form this multi unit and aggregate of three PrPSc molecules. Now, let's suppose we have these red molecules in close proximity that are normal. Now, somehow by mechanism that we are still unsure of these infected molecules, these misfolded proteins can somehow transform these normal proteins into these abnormal proteins. And so these will bind to our multiunit aggregate, transforming these into the blue ones. And eventually we form this fiber like a protein we call an amyloid fiber. So these are known as amyloid fibers.