If what you are talking about is the stuff I have had which sounds very similar, then yes it is plaque. In my case I know it is quite young/new plaque, that's why it doesn't look like the pics. I had a lot of this stuff come out in my last Dr Jensen cleanse, and very little of the really old plaque. I attribute this to the fact that I do regular bowel cleanses, so there's not enough time for the old stuff to develop. Maybe this is the same for you too.