XML 34 R5.htm IDEA: XBRL DOCUMENT v2.4.0.6
Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)
 3 Months Ended 141 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
Cash flows from operating activities:      
Net loss $ (696,797) $ (730,513) $ (25,463,939)
Adjustments to reconcile net loss to net cash used in operating activities:      
Depreciation and amortization 17,550 23,411 676,830
Accretion of preferred stock redemption value     346,673
Stock-based compensation expense, including common stock issued for services 265,825 81,576 6,935,640
Changes in assets and liabilities:      
Grant funds receivable 52,434 (161,597) (213,814)
Prepaid expenses and other current assets (6,248) (18,227) (48,549)
Deposits and other assets     (11,010)
Accounts payable and accrued expenses 22,747 (431,336) 438,572
Total adjustments 352,308 (506,173) 8,124,342
Net cash used in operating activities (344,489) (1,236,686) (17,339,597)
Cash flows from investing activities:      
Purchase of property and equipment     (538,490)
Proceeds from sale of property and equipment     5,580
Net cash used in investing activities     (532,910)
Cash flows from financing activities:      
Net proceeds from sale of common stock 1,060,000 310,160 16,896,468
Net proceeds from sale of preferred stock   1,999,032 2,727,475
Net cash provided by financing activities 1,060,000 2,309,192 19,623,943
Net increase in cash and cash equivalents 715,511 1,072,506 1,751,436
Cash and cash equivalents at beginning of period 1,035,925 1,167,980  
Cash and cash equivalents at end of period 1,751,436 2,240,486 1,751,436
Supplemental disclosure of cash flow information:      
Interest paid     $ 5,669