Against, essentially, every formal of influenza. i don't think we'll get a perfect universal flu vaccine, but you can start off getting to the ultimate goal, so that you can maybe get a vaccination every five to ten years that would give you enough background protection that even when you encounter a brand new pandemic virus, there would be enough of the cross reactivity with that particular vaccine that you'd be able to protect people. that's the ult mall goal. >> it is extraordinary, when you look, you know, for hopeful things, when you look at hiv and how, for many people, it at least in th...