 So that means if you are going to get an injection in the knee, it is specifically for the knee. If you're going to get it in the shoulder, it is specifically for the shoulder. That's not what's happening here. What's happening here is that when your body's own dormant stem cells reactivate, it immediately knows what needs to be repaired. So you see, when you think about this, we all have 200 different types of cells in the body, right?