Okay, so the first question is, how do we view the various technologies or the technology platforms that are available to us in terms of the design of an optimized, what we believe to an optimized herpes vaccine. Now, as you know, a significant amount of literature exist and this is a view, I think you have in schooled in as well, Joe, HSPs are very important molecule that present antigens to the immune system. Specifically, they get the HSP complexes containing the antigens, they get taken up by antigen presenting cells such as dendritic cells and macrophages and to a relay mechanism. This results in the presentation of the antigen by a cell that is a profession presenter to the immune system by means of activating T cells and the cascade of cytokines that play a very important role in achieving a competent immune response. Now, in addition to that, the use of QS-21 independently of heat shock protein technology has shown us reason, there is this very important paper that came out of the collaboration of Glaxo with Ludwig that elucidated on the importance of QS-21, in fact, not only importance but the requirement of QS-21 in cross-timing the immune system when it is administered with antigens. So independently of heat shock protein, QS-21 is now known from a mechanism of action perspective to be a very key timer of the immune system. Now, if you go back to our Phase 1 study obligation on the HerpV vaccine, you will have noticed that we have done this as a four-on study. There is placebo, there is QS-21 alone, there is HerpV alone and HerpV protein 32 antigenic construct and that construct plus QS-21. The most immune response was achieved when the heat shock protein construct with the antigen is used in combination with QS-21. Now, heat shock proteins, by itself, with the antigen do achieve some immune response but when you add QS-21, then you get a very special immune response. Now, this additive immune help provided by QS-21 has also been well published in other studies. For example, if you take the malaria vaccine construct, you do achieve some immune response but when you add QS-21, with that response was up by a fold or two. In the melanoma trial that have been done with the melanoma and the non-small lung cancer vaccine. Once again, the addition of QS-21 results in a very substantial uptick to immune response. So I think we now know because we are so close to the situation and I think as a the success of these products, meaning the malaria product and the MAGE program happens it will be quite evident that QS-21 is a very critical adjuvant in constructing a vaccine. Both malaria and cancer vaccine programs have been in the long time coming. These programs have been in development for 20 years or so. So finally, we are coming to, now, the finish line and that’s very exciting.