Note 7 - Stockholders' Equity - Allocation of Recognized Period Costs (Details) - USD ($)	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Employee Stock Option [Member]
Allocated Share-based Compensation Expense	$ 152,333	$ 99,553
Change in fair value from modification of option terms	177,471	42,550
General and Administrative Expense [Member]
Allocated Share-based Compensation Expense	310,133	177,642
General and Administrative Expense [Member] | Stock Bonus [Member]
Allocated Share-based Compensation Expense	15,021	69,000
General and Administrative Expense [Member] | Employee Stock Option [Member]
Allocated Share-based Compensation Expense	129,081	66,092
Change in fair value from modification of option terms	166,031	42,550
Research and Development Expense [Member]
Allocated Share-based Compensation Expense	56,776	33,461
Research and Development Expense [Member] | Stock Bonus [Member]
Allocated Share-based Compensation Expense	22,084
Research and Development Expense [Member] | Employee Stock Option [Member]
Allocated Share-based Compensation Expense	23,252	33,461
Change in fair value from modification of option terms	$ 11,440