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Consolidated Statements of Stockholders' Equity (USD $) | Total | Common Stock | Additional Paid-in Capital | Accumulated Deficit
--- | --- | --- | --- | ---
Beginning balance at Sep. 30, 2010 | $ 10,337,690 | $ 306 | $ 80,758,872 | $ (70,421,488)
Beginning balance, shares at Sep. 30, 2010 |  | 30,614,789 |  |
Issuance of common stock: |  |  |  |
Upon exercise of stock options | 145,450 | 2 | 145,448 |
Upon exercise of stock options, shares | 131,765 | 131,765 |  |
Upon exercise of warrants (net of non-cash offering costs of $2,164,773) | 2,181,840 | 16 | 2,181,824 |
Upon exercise of warrants (net of non-cash offering costs of $2,164,773), shares |  | 1,627,945 |  |
Issuance of warrants | 2,164,773 |  | 2,164,773 |
Share-based compensation expense | 422,643 |  | 422,643 |
Net income | 5,022,902 |  |  | 5,022,902
Ending balance at Sep. 30, 2011 | 20,275,298 | 324 | 85,673,560 | (65,398,586)
Ending balance, shares at Sep. 30, 2011 |  | 32,374,499 |  |
Issuance of common stock: |  |  |  |
Upon exercise of stock options, shares | 0 |  |  |
Share-based compensation expense | 684,451 |  | 684,451 |
Net income | 1,462,020 |  |  | 1,462,020
Ending balance at Sep. 30, 2012 | $ 22,421,769 | $ 324 | $ 86,358,011 | $ (63,936,566)
Ending balance, shares at Sep. 30, 2012 |  | 32,374,499 |  |

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