6. Research and development (Narrative) (USD $)
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3 Months Ended | 9 Months Ended | 187 Months Ended | 9 Months Ended | 9 Months Ended | |||||||
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Sep. 30, 2013
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Jun. 30, 2012
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Sep. 30, 2013
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Sep. 30, 2012
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Sep. 30, 2013
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Sep. 30, 2013
AOT Testing [Member]
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Sep. 30, 2012
AOT Testing [Member]
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Dec. 31, 2012
Temple University License Agreements [Member]
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Sep. 30, 2013
Temple University License Agreements [Member]
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Sep. 30, 2012
Temple University License Agreements [Member]
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Sep. 30, 2013
Temple University Sponsored Research Agreement [Member]
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Sep. 30, 2012
Temple University Sponsored Research Agreement [Member]
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Research and Development Arrangement, Contract to Perform for Others [Line Items] | ||||||||||||
Research and development committed | $ 314,000 | $ 115,625 | ||||||||||
Research and development expenses recognized during period | 563,559 | 249,311 | 1,322,816 | 740,201 | 9,992,497 | 1,095,959 | 456,372 | 140,625 | 140,625 | 86,232 | 125,000 | |
Expenses accrued pursuant to licensing agreement included in accounts payable | $ 106,250 | $ 92,482 |