 You know, if someone is at risk of HIV and is getting PrEP, which is such a fantastic advance, then they should be tested for hepatitis, and they should be tested for syphilis. Unfortunately, we don't have a vaccine for syphilis, and I know that type of research continues at the NIH and more. But in the meantime, we have a lot of tools, and we're going to put those tools to use. Great.