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CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Revenues |  |
Product sales | $ 1,529,000 | $ 2,865,000
License revenues | 435,000 | 1,446,000
Royalties | 78,000 | 93,000
Total revenues | 2,042,000 | 4,404,000
Expenses |  |
Research and development | 884,000 | 2,010,000
Product costs | 125,000 | 267,000
Selling, general and administrative | 4,834,000 | 6,024,000
Depreciation and amortization | 3,000 | 419,000
Total expenses | 5,846,000 | 8,720,000
Loss from operations | (3,804,000) | (4,316,000)
Interest and miscellaneous income | 251,000 | 242,000
Interest and other expense | (279,000) | (608,000)
Warrant extension expense | 0 | (2,316,000)
Gain on change in fair value of derivative-warrants | 271,000 | 1,236,000
Gain (loss) on change in fair value of derivative-preferred stock | 8,010,000 | (4,770,000)
Total non operating income (expense) | 8,253,000 | (6,216,000)
Net income (loss) | 4,449,000 | (10,532,000)
Less preferred stock dividends | (2,898,000) | (1,999,000)
Net income (loss) allocable to common stockholders | $ 1,551,000 | $ (12,531,000)
Basic and diluted loss per common share |  |
Basic (in dollars per share) | $ 0.06 | $ (0.52)
Diluted (in dollars per share) | $ 0.06 | $ (0.52)
Weighted average number of common shares outstanding |  |
Basic (in shares) | 25,243,160 | 24,178,768
Diluted (in shares) | 25,473,646 | 24,178,768

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