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Major Customers and Concentration of Credit Risk (Tables) | 12 Months Ended
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Dec. 31, 2013
Risks and Uncertainties [Abstract] |
Schedule of major customers and concentration risks |
Customer | 2013 |  | % of Total Revenue |  | 2012 |  | % of Total Revenue |  | 2011 |  | % of Total Revenue
Roche | $ | 9,181,759 |  |  | 68 | % |  | $ | — |  |  | — | % |  | $ | — |  |  | — | %
NIAID | 2,090,939 |  |  | 16 |  |  | 2,831,115 |  |  | 69 | % |  | 7,801,976 |  |  | 80 | %
VGX Int'l (affiliated entity) | 425,000 |  |  | 3 |  |  | 577,467 |  |  | 14 |  |  | 411,459 |  |  | 4 |
All other | 1,769,648 |  |  | 13 |  |  | 710,070 |  |  | 17 |  |  | 1,581,822 |  |  | 16 |
Total Revenue | $ | 13,467,346 |  |  | 100 | % |  | $ | 4,118,652 |  |  | 100 | % |  | $ | 9,795,257 |  |  | 100 | %

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- Definition Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6327-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13531-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13537-108611 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6442-108592 + Details
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