That's a great question, a tough question. I will try to answer it.
By the way, I interacted with Pat Bishop for a long time. There is no doubt that he was a great Canadian researcher on head injuries.
With respect to your question about tau and the fact that we can see it at an autopsy, the good news that's starting to appear is that research has shown us a way to identify it in the living. We're not ready to be able to apply it to an individual patient who is suffering, let's say, with dementia, and you want to know whether it's regular Alzheimer's disease or CTE. We're not ready for that, but I think that is coming down the pike. We will be able to identify it in the living.
One of the hottest areas of research right now in this condition is the use of PET scanning, which can identify deposits of this abnormal protein. We use a radioactive tracer that's labelled with fluorine-18. We inject it and then do PET scanning, and we can see deposits of tau in the brains of some of those living athletes.
We've had a very good relationship with the CFL Alumni Association. They have sent along a number of their alumni for examination with this technique, and we can identify deposits of tau in the brains of people who are living.
I think that's a very important first step in trying to develop a treatment for this. We don't want to just be able to diagnose it. We want to be able to do something about those deposits of tau.