Loss per Share	3 Months Ended
Mar. 31, 2015
Loss per Share
Loss per Share	11. Loss per Share Basic and diluted net loss per share is presented in conformity with ASC Topic 260, Earnings per Share, (“ASC Topic 260”) for periods presented. In accordance with ASC Topic 260, basic and diluted net loss per common share was determined by dividing net loss applicable to common stockholders by the weighted-average common shares outstanding during the period. Diluted weighted-average shares are the same as basic weighted-average shares because shares issuable pursuant to the exercise of stock options and warrants would be antidilutive. For the three months ended March 31, 2015 and 2014 the effect of 16,621,065 and 11,646,060, respectively outstanding stock options, at the end of each period, were excluded from the calculation of diluted loss per share because the effect was antidilutive. For the three months ended March 31, 2015 and 2014, the effect of 5,951,071 and 6,013,571, respectively outstanding warrants (which include warrants accounted for as equity and derivative liabilities) were excluded from the calculation of diluted loss per share because the effect was antidilutive.

Loss per Share

3 Months Ended

Mar. 31, 2015

11. Loss per Share

Basic and diluted net loss per share is presented in conformity with ASC Topic 260, Earnings per Share, (“ASC Topic 260”) for periods presented. In accordance with ASC Topic 260, basic and diluted net loss per common share was determined by dividing net loss applicable to common stockholders by the weighted-average common shares outstanding during the period. Diluted weighted-average shares are the same as basic weighted-average shares because shares issuable pursuant to the exercise of stock options and warrants would be antidilutive. For the three months ended March 31, 2015 and 2014 the effect of 16,621,065 and 11,646,060, respectively outstanding stock options, at the end of each period, were excluded from the calculation of diluted loss per share because the effect was antidilutive. For the three months ended March 31, 2015 and 2014, the effect of 5,951,071 and 6,013,571, respectively outstanding warrants (which include warrants accounted for as equity and derivative liabilities) were excluded from the calculation of diluted loss per share because the effect was antidilutive.