4. Other Long Term Assets

6 Months Ended

Jun. 30, 2015

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Other Long Term Assets

Other long term assets at June 30, 2015 and December 31, 2014 include costs incurred from third parties in connection with the Merck Serono Agreement (see Note 2), amounting to $19,469 and $38,939, respectively, that are expected to be amortized beyond the upcoming 12-month period.