License agreements, research collaborations and development agreements (Details Textual) - USD ($)	1 Months Ended	3 Months Ended			9 Months Ended
	Sep. 30, 2013	Sep. 30, 2015	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
License Agreements Research Collaborations And Development Agreements [Line Items]
Future Minimum Royalty Payments Due		$ 20,000			$ 20,000
License Upfront Payment Received	$ 250,000
Royalty (Income) Expense		7,484	$ 23,810		(13,769)	$ 73,142
Licenses Revenue		27,780		$ 172,220	$ 208,340	$ 1,133,340
Life Technologies [Member]
License Agreements Research Collaborations And Development Agreements [Line Items]
Royalty (Income) Expense		$ 150,570