Okay, if you'll allow me to.
What we find is that, once we treat oil sands process-affected water using this titanium dioxide photocatalyst, we can remove the acute lethality of the water. However, if you only partly break down those compounds you can actually create more toxic breakdown products, so you really have to break all of those compounds down to be able to basically have the same end points as we see in our control fish that are not exposed to oil sands process-affected water.