6. INCOME TAXES (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Deferred tax asset resulting from:
Net Operating Loss	$ 24,806,175	$ 24,531,026
Research and development tax credits	2,593,792	1,778,030
Capitalized research and development costs	11,900,122	8,803,914
Subtotal	39,300,089	35,112,970
Less valuation allowance	(39,300,089)	(35,112,970)
Net deferred tax asset	$ 0	$ 0