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STATEMENTS OF STOCKHOLDERS’ EQUITY (USD $)
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Total
Beginning Balance at Dec. 31, 2011 $ 4,832 $ 60,324,852 $ (57,204,099) $ 3,125,585
Beginning Balance (in shares) at Dec. 31, 2011 4,832,079      
Exercise of warrants 17 29,982   29,999
Exercise of warrants (in shares) 16,666      
Exercise of stock options 12 14,003   14,015
Exercise of stock options (in shares) 12,318     (7,318)
Stock-based compensation   597,668   597,668
Common stock issued to settle litigation         
Net loss     (3,298,082) (3,298,082)
Ending Balance at Dec. 31, 2012 4,861 60,966,505 (60,502,181) 469,185
Ending Balance (in shares) at Dec. 31, 2012 4,861,063      
Exercise of stock options 6 6,474    
Exercise of stock options (in shares) 6,000     (6,000)
Stock-based compensation   249,704   249,704
Common stock issued to settle litigation   28,500   28,500
Net loss     (620,493) (620,493)
Ending Balance at Dec. 31, 2013 $ 4,867 $ 61,251,183 $ (61,122,674) $ 133,376
Ending Balance (in shares) at Dec. 31, 2013 4,867,063