Agreed it is high risk/reward. Given that I probaby would have...

Agreed it is high risk/reward. Given that I probaby would have had to think twice before investing but the main decider for me is the co-operation with the highly respected and well credentialled US Army Walter Reed Medical Centre. For medical research involving brain damage issues its as good as it gets to have them involved. I would imagine WR receives lots of proposals from biotechs and so would be very discriminating in their choice of who to work with based on the program's potential merits. No guarantee of success but it is a big positive to have this particular collaboration.