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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Revenue: |  |  |  |
Product revenue | $ 10,150 | $ 9,224 | $ 19,883 | $ 17,915
Cost of product revenue | 5,747 | 5,574 | 10,837 | 11,088
Gross profit on product revenue | 4,403 | 3,650 | 9,046 | 6,827
Government grants and cooperative agreements revenue | 0 | 0 | 0 | 91
Operating expenses: |  |  |  |
Research and development | 3,506 | 1,712 | 6,206 | 3,536
Selling, general and administrative | 7,954 | 6,686 | 14,807 | 12,652
Amortization of intangible assets | 51 | 51 | 101 | 101
Total operating expenses | 11,511 | 8,449 | 21,114 | 16,289
Loss from operations | (7,108) | (4,799) | (12,068) | (9,371)
Non-operating income (expense), net: |  |  |  |
Revaluation of warrant liability | 686 | 3,674 | (4,387) | (787)
Foreign exchange loss | (157) | (611) | (211) | (240)
Interest expense | (107) | (135) | (238) | (274)
Other income (expense), net | 16 | 5 | 33 | 7
Total non-operating income (expense), net | 438 | 2,933 | (4,803) | (1,294)
Loss before income taxes | (6,670) | (1,866) | (16,871) | (10,665)
Provision for income taxes | 54 | 41 | 105 | 76
Net loss | $ (6,724) | $ (1,907) | $ (16,976) | $ (10,741)
Net loss per common share: |  |  |  |
Basic | $ (0.10) | $ (0.04) | $ (0.26) | $ (0.20)
Diluted | $ (0.10) | $ (0.10) | $ (0.26) | $ (0.20)
Weighted average common shares outstanding used for calculating net loss per common share: |  |  |  |
Basic | 69,727 | 54,418 | 64,756 | 53,753
Diluted | 71,928 | 55,236 | 64,756 | 53,753

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