Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2014

Summary of Significant Accounting Policies

Schedule of antidilutive securities excluded from computations of diluted net loss per common share

	As of March 31,
	2014	2013
Warrants to purchase common stock	88,545	38,997
Options to purchase common stock	2,548,314	1,050,061
	2,636,859	1,089,058