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Intangible Assets (Tables) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2013 | Dec. 31, 2012
Intangible Assets | The Company’s intangible assets consist of the following:
|  | March 31, 2013 |  |  | December 31, 2012 |
|  | (unaudited) |  |  |  |
License agreements |  | $ | 802,994 |  |  | $ | 772,230 |
Patents |  |  | 64,079 |  |  |  | 63,429 |
Less: accumulated amortization |  |  | (276,615 | ) |  |  | (261,928 | )
Intangible assets, net |  | $ | 590,458 |  |  | $ | 573,731 |
| The Company’s intangible assets consist of the following:
|  | December 31, 2012 |  |  | December 31, 2011 |
License agreements |  | $ | 772,230 |  |  | $ | 899,231 |
Patents |  |  | 63,429 |  |  |  | 291,907 |
Less: accumulated amortization |  |  | (261,928 | ) |  |  | (291,658 | )
Intangible assets, net |  | $ | 573,731 |  |  | $ | 899,480 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275 + Details
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