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NATURE OF OPERATIONS AND BASIS OF PRESENTATION (Details) (USD $) | 3 Months Ended | 200 Months Ended |  | 0 Months Ended | 3 Months Ended | 87 Months Ended | 3 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Dec. 14, 2012 Aspire Capital Fund, LLC | Jan. 11, 2013 Preferred stock | Mar. 31, 2013 Preferred stock item | Mar. 31, 2013 Preferred stock | Mar. 31, 2013 Common stock | Mar. 31, 2013 Common stock Aspire Capital Fund, LLC
Nature of Operations |  |  |  |  |  |  |  |  |
Grant awarded from UK Government's Biomedical Catalyst | $ 1,900,000 |  |  |  |  |  |  |  |
Recent Developments |  |  |  |  |  |  |  |  |
Cash dividend declared per share (in dollars per share) |  |  |  |  | $ 0.15 |  |  |  |
Dividend rate (as a percent) |  |  |  |  |  | 6.00% |  |  |
Number of securities exchange agreements |  |  |  |  |  | 3 |  |  |
Number of shares issued upon conversion |  |  |  |  |  |  |  | 1,513,653 |
Preferred shares exchanged (in shares) |  |  |  |  |  | 792,460 | 1,626,131 |  |
Excess number of shares issued upon conversion |  |  |  |  |  |  |  | 1,465,480 |
Deemed dividend | 8,366,000 | 11,881,000 |  |  |  | 8,400,000 |  |  |
Preferred stock, shares outstanding | 420,682 | 420,682 | 1,213,142 |  |  | 420,682 | 420,682 |  |
Number of shares issued under purchase agreement |  |  |  | 158,982 |  |  |  |  | 650,000
Purchase price for shares issued under purchase agreement |  |  |  | $ 1,000,000 |  |  |  |  | $ 3,400,000

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