Statements Of Operations (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Statements Of Operations [Abstract]
Sponsored research revenue	$ 31,160	$ 42,690	$ 1,222,192	$ 53,819
Operating expenses:
Research and development	1,371,111	820,984	4,356,637	1,819,036
General and administrative	677,876	811,880	2,013,475	2,345,619
Total operating expenses	2,048,987	1,632,864	6,370,112	4,164,655
Loss from operations	(2,017,827)	(1,590,174)	(5,147,920)	(4,110,836)
Interest income	55	2,327	1,573	6,840
Net loss	$ (2,017,772)	$ (1,587,847)	$ (5,146,347)	$ (4,103,996)
Basic and diluted net loss per common share	$ (0.03)	$ (0.02)	$ (0.06)	$ (0.06)
Weighted average number of common shares outstanding	79,986,359	73,531,578	79,774,523	66,729,519