Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Series B Convertible Preferred Stock [Member]
Stockholders’ equity:
Convertible Preferred Stock	$ 76,095	$ 76,095
Series C Convertible Preferred Stock [Member]
Stockholders’ equity:
Convertible Preferred Stock	940,705	983,941
Cash and cash equivalents	511,096	1,060,348
Grant funds receivable	8,765	119,978
Prepaid expenses and other current assets	82,297	56,649
Total current assets	602,158	1,236,975
Property and equipment, net	62,023	83,608
Deposits	11,010	11,010
Total assets	675,191	1,331,593
Accounts payable	33,497	100,935
Accrued expenses (Note 6)	219,092	26,055
Total current liabilities	252,589	126,990
Commitments (Note 7)
Common Stock, $0.001: Authorized shares – 300,000,000 and 150,000,000 at September 30, 2016 and December 31, 2015, respectively Issued and outstanding shares – 49,172,733 and 31,950,813 at September 30, 2016 and December 31, 2015, respectively	49,173	31,951
Additional paid-in capital	34,167,870	32,587,543
Accumulated deficit	(34,811,241)	(32,474,927)
Total stockholders’ equity	422,602	1,204,603
Total liabilities and stockholders’ equity	$ 675,191	$ 1,331,593

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).