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Note 7 - Collaborative Agreements (Details Textual) - USD ($)
3 Months Ended 36 Months Ended 133 Months Ended 148 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2017
Dec. 31, 2015
Mar. 31, 2017
Research and Development Expense $ 138,812 $ 48,515      
In Process Research and Development [Member]          
Research and Development Expense $ 23,002 $ 3,000      
University of Toronto [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures       25,000  
University of Toronto [Member] | Employee Stock Option [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period       10 years  
University of Toronto [Member] | Maximum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price       $ 1  
Professor [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures     483,299    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares     275,000    
Professor [Member] | Maximum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price $ 1   $ 1   $ 1
Professor [Member] | Maximum [Member] | Employee Stock Option [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period         13 years
Professor [Member] | Minimum [Member] | Employee Stock Option [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period         10 years