Shorts are a long's best friend. I love them when I am long in a stock. This is one of the main reasons I am loading the boat here, now. No other group of people are contractually obligated to purchase shares in the future and almost always do so forcibly through margin calls to extend a run. This is why the PTs thrown out by the investment banks seem so easily within reason.
"The vaccine may prove useful in more than just treatment of glioblastoma, Davis says, because the abnormal protein EGFRvIII turns up in several other tumor types, including cancers of the breast, lung, head and neck. A success in glioblastoma could thus portend a similar vaccine approach to these cancers as well, although trials for those other cancers won't take place until a large-scale, controlled glioblastoma clinical trial has reported success. "