Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating activities:
Net loss	$ (11,052,427)	$ (3,177,599)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization and depreciation	171,666	172,785
Common stock and warrants issued in exchange for services	1,559,588	15,000
Change in fair value of warrant liability	5,349,422
Restricted stock issued to employee		10,000
Stock-based compensation	571,171	382,774
Change in operating assets and liabilities:
Grants receivable	177,473	123,900
Other receivable		574,157
Prepaid expenses	(57,367)	(13,759)
Accounts payable	90,082	(279,833)
Accrued compensation	26,059	(100,940)
Total adjustments	7,888,094	884,084
Net cash used in operating activities	(3,164,333)	(2,293,515)
Investing activities:
Purchase of office equipment	(10,539)	(4,755)
Net cash used in investing activities	(10,539)	(4,755)
Financing activities:
Proceeds from sale of common stock, net	6,216,762
Proceeds from exercise of warrants and options	184,286
Net cash provided by financing activities	6,401,048
Net increase (decrease) in cash and cash equivalents	3,226,176	(2,298,270)
Cash and cash equivalents at beginning of period	3,356,380	5,996,668
Cash and cash equivalents at end of period	6,582,556	3,698,398
Supplemental disclosure of non cash investing and financing activities:
Warrant issued in Unit Offering	4,287,788
Reclassification of warrant liability to additional paid in capital relating to warrants exercised	$ 201,311