Note 13 - Selected Quarterly Financial Data (unaudited) (Tables)

12 Months Ended

Dec. 31, 2014

Notes Tables

Schedule of Quarterly Financial Information [Table Text Block]

	2014 Quarter Ended
	March 31			June 30			September 30			December 31
Revenue from grants	$	157,340		$	180,441		$	322,086		$	223,089
Net loss		(615,918	)		(679,537	)		(514,515	)		(923,585	)
Net loss per share		(0.02	)		(0.03	)		(0.02	)		(0.03	)

	2013 Quarter Ended
	March 31			June 30			September 30			December 31
Revenue from grants	$	797,040		$	441,561		$	1,004,211		$	174,738
Net loss		(696,797	)		(526,284	)		(190,148	)		(871,714	)
Net loss per share		(0.03	)		(0.02	)		(0.01	)		(0.04	)