| Cash and cash equivalents | 4.27M |
| Collaboration revenue receivable | |
| Prepaid expenses and other current assets | 411K |
| Total current assets | 5.28M |
| Property, plant and equipment, net | 979K |
| Total assets | 7.74M |
| Accrued expenses | 736K |
| Income taxes payable | |
| Deferred program fee revenue | |
| Total current liabilities | 4.2M |
| Commitments and contingencies (Note 9) | 0 |
| Common stock - $.01 par value; 100,000 shares authorized; 45,315 and 43,894 shares issued and outstanding at June 30, 2011 and December 31, 2010 | 118K |
| Additional paid-in capital | 375.63M |
| Accumulated deficit | -376.23M |
| Total stockholders' equity | -489K |
| Total liabilities and stockholders' equity | 7.74M |