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Note 11 - Related Party Transactions (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Emory [Member] | Patent Cost Reimbursements [Member] | General and Administrative Expense [Member]        
Related Party Transaction, Expenses from Transactions with Related Party $ 15,876 $ 22,590 $ 73,877 $ 63,906