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Note 12 - Subsequent Events | 12 Months Ended
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Dec. 31, 2017
Notes to Financial Statements |
Subsequent Events [Text Block] | 12 . Subsequent Event s During January and February 2018, 300 shares of Series D Preferred Stock were converted into 20,000,000 shares of common stock. During February 2018, we issued 5,000,000 shares of our common stock in connection with entering into a financial advisory and investment banking agreement. On February 28, 2018, we entered into a Senior Note Purchase Agreement with Georgia Research Alliance, Inc. (GRA) pursuant to which we issued a five -year Senior Promissory Note (the “Note”) in exchange for $50,000. The Note bears an annual interest rate of 5%, payable monthly, with principal repayments beginning in the second year. In connection with the Note, we also issued to the GRA a five -year warrant to purchase 178,571 shares of our common stock at a purchase price of $0.042 per share. On March 5, 2018, we sold shares of our Series E convertible preferred stock to certain institutional investors for an aggregate purchase price of $600,000. The preferred stock is convertible at any time into shares of our common stock at $0.08 per share ( 7,500,000 shares in the aggregate), subject to possible adjustment as provided in the certificate of designation.

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- Definition The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 855 -URI http://asc.fasb.org/topic&trid=2122774 + Details
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