Note 4 - Balance Sheet Components - Property and Equipment, and Other Assets (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Property and equipment:
Property and equipment	$ 654,396	$ 618,893
Accumulated depreciation and amortization	(541,169)	(498,666)
Property and equipment, net	113,227	120,227
Other assets:
Deposits	11,010	11,010
Total other assets	13,510	21,010
Leasehold Improvements [Member]
Property and equipment:
Property and equipment	115,605	115,605
Laboratory Equipment [Member]
Property and equipment:
Property and equipment	510,106	474,603
Other Furniture Fixtures And Equipment [Member]
Property and equipment:
Property and equipment	28,685	28,685
Patented Technology [Member]
Other assets:
Technology licenses	248,855	248,855
Accumulated amortization – technology licenses	$ (246,355)	$ (238,855)