Accrued Expenses

6 Months Ended

Jun. 30, 2011

Accrued Expenses

9.             Accrued Expenses

Accrued expenses consist of the following:

	June 30,		December 31,
	2011		2010
Payroll and benefits	$	1,752,967	$	1,895,393
Professional fees		445,706		417,751
Clinical trial costs		-		149,319
Research grants		2,194,388		2,021,003
Other		1,093,732		892,119
Total	$	5,486,793	$	5,375,585