Note 7 - Commitments and Contingencies (Details Textual) - USD ($)		1 Months Ended	3 Months Ended			12 Months Ended
	Apr. 16, 2018	Jul. 31, 2018	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2016	Dec. 31, 2009	Oct. 31, 2017
Operating Lease, Rent Expense Per Month	$ 2,050
Payments to Acquire Intangible Assets						$ 111,749	$ 80,882
Percentage of Outstanding Shares for Warrant to Purchase Shares of Common Stock										3.00%
National Institute of Health [Member]
Royalty on Sales, Percentage									1.00%
Royalty Term									21 years
Royalty Payment, Annual Minimum									$ 20,000
Other Commitment, Total					$ 191,393	$ 280,000		$ 191,393
Legal Fees					15,393
Accounts Payable, Other, Current					176,000			176,000
Accrued Royalties, Current					$ 140,000			140,000
Other Expenses, Total								$ 36,000
Extinguishment of Debt, Amount				$ 120,000
Accrued Patent Costs, Current				36,000
Payments for Royalties			$ 20,000	20,000
Payment for Contingent Consideration Liability, Operating Activities				240,000
Contingent Payments Annual Increase				20,000
Payments to Acquire Intangible Assets			$ 36,000
Finite-Lived Intangible Assets, Period Increase (Decrease), Total				$ (120,000)
Clinical Trial Agreement [Member] | MD Anderson [Member]
Long Term Contract, Estimated Cost							$ 2,000,000
Research Agreement [Member] | MD Anderson [Member]
Long Term Contract, Estimated Cost		$ 2,000,000