 Now, Bill, you've written a great deal about the role of hyaluronic acid in the body's connective tissues. How does HA work in the joints and the connective tissues? It's a natural cushioning agent. And Pat, we're talking about between the bones. It also surrounds the nerves. There's a sciatic nerve. There's an ulnar nerve. There's a carpal tunnel nerve. All of these are going to need the special cushioning that HA can give them.