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Condensed Consolidated Statements of Operations and Comprehensive Income (Loss)(unaudited) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Product revenue	$ 15,414,681	$ 13,720,929	$ 26,474,840	$ 25,362,979
Licensing, milestone and contract revenue	726,171	778,871	1,403,691	1,602,908
Total revenue	16,140,852	14,499,800	27,878,531	26,965,887
Operating expenses:
Cost of product revenue	6,655,804	5,891,752	12,260,366	11,015,427
Research & development	1,574,155	1,836,653	3,106,820	3,712,297
Selling, general & administrative	4,233,316	4,967,346	8,277,090	9,256,324
Total operating expenses	12,463,275	12,695,751	23,644,276	23,984,048
Income from operations	3,677,577	1,804,049	4,234,255	2,981,839
Interest income (expense), net	(45,281)	(59,287)	(86,202)	(109,207)
Income before income taxes	3,632,296	1,744,762	4,148,053	2,872,632
Provision for income taxes	1,349,655	678,010	1,541,001	1,091,600
Net income	2,282,641	1,066,752	2,607,052	1,781,032
Basic net income per share:
Net income	$ 0.18	$ 0.08	$ 0.21	$ 0.14
Basic weighted average common shares outstanding	12,725,216	12,645,889	12,707,143	12,630,398
Diluted net income per share:
Net income	$ 0.17	$ 0.08	$ 0.19	$ 0.13
Diluted weighted average common shares outstanding	13,739,836	13,642,323	13,741,337	13,637,309
Net income	2,282,641	1,066,752	2,607,052	1,781,032
Other comprehensive income (loss)
Foreign currency translation adjustment	595,200	(2,820,119)	2,344,862	(4,878,900)
Comprehensive income (loss)	$ 2,877,841	$ (1,753,367)	$ 4,951,914	$ (3,097,868)

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