text:  Yes, I think it's, you know, very reasonable to study them. We, again, just still don't know a lot right now. And we are trying to tackle this from multiple angles. We're trying to do these epidemiologic studies, but it's hard. We are trying to study them in mouse models because you can more easily control this environment. And you can expose these mice early in life to these chemicals and see what happens. Do they develop cancer? Do they develop cancer at a younger age? So we're experimenting with all these things.