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Note 3 - Property and Equipment (Tables) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2015 | Dec. 31, 2014
Notes Tables |  |
Property, Plant and Equipment [Table Text Block] |
|  | June 30, 2015 |  |  | December 31, 2014 |
Laboratory equipment |  | $ | 525,956 |  |  | $ | 510,106 |
Leasehold improvements |  |  | 115,605 |  |  |  | 115,605 |
Other furniture, fixtures & equipment |  |  | 28,685 |  |  |  | 28,685 |
Total property and equipment |  |  | 670,246 |  |  |  | 654,396 |
Accumulated depreciation and amortization |  |  | (572,170 | ) |  |  | (557,703 | )
Property and equipment, net |  | $ | 98,076 |  |  | $ | 96,693 |
|  | 2014 |  |  | 2013 |
Laboratory equipment |  | $ | 510,106 |  |  | $ | 474,602 |
Leasehold improvements |  |  | 115,605 |  |  |  | 115,605 |
Other furniture, fixtures & equipment |  |  | 28,685 |  |  |  | 28,685 |
Total property and equipment |  |  | 654,396 |  |  |  | 618,892 |
Accumulated depreciation and amortization |  |  | (557,703 | ) |  |  | (498,665 | )
Property and equipment, net |  | $ | 96,693 |  |  | $ | 120,227 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph b -Article 5 + Details
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