Net Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2013

Net Loss Per Share

Schedule of antidilutive securities excluded from the calculation of diluted loss per share

	September 30,
	2013	2012
Options to purchase Common Stock	3,894,044	3,295,066
Warrants to purchase Common Stock	6,306,582	5,729,754
Series A Convertible Preferred Stock	63,125	99,583
	10,263,751	9,124,403