Gregory M. Glenn
Analyst · George Zavoico
Greg, here. As you probably know, since people have been working on Ebola vaccine for quite a while, most of the assays and the challenge models are done with previous strains. So for example, the mouse challenge data where we showed 100% protection was done with Mayinga strain, which is from 1976, and the macaques strain was done with Kikwit, which was a 1996 strain. So just by definition in our challenge studies, we are showing cross-protection. Also that's true of the way the neutralization is assessed because, again, those assays and challenges have been historic and getting the assays up-to-date have been challenging for investigators. So our collaborators have to say [indiscernible] are just beginning to have the neutralization assay for the current strain available. And by the way, it's circulating in Guinea, but they've renamed the sequence of the strain word to Makona. So our 2014 Makona vaccine represents the circulating sequence currently in Africa. Maybe I'd just add a little bit. I would have -- you would expect with Matrix-M that you get some additional presentation of conserved antigens, and I think what we see with this relative cross-protection would be at least in part explainable by the very, very robust response we see to the protein in the Matrix-M. And you probably noticed, but we posted some of that data with a WHO presentation. But you can see we have very, very high immune responses, and I think that would explain -- they're also high affinity. If you see in that table there, we did a competitive ELISA. We measured the affinity. These antibodies are very, very high affinity antibodies. So typically, that also should add to cross-protection.
George B. Zavoico - MLV & Co LLC, Research Division: Now the customers for the Ebola strain -- I'm sorry, for the Ebola vaccine, you mentioned the 4 main customers. That's all government, and so what -- and it's probably too early to predict or to project what the costs may be, but the intent would be to -- for broad application through government purchasing, would it be like cost plus? Or is it just early to talk about it?