| http://www.w3.org/ns/prov#value | - This increase is a result of approximately $17.6 million in proceeds from our April 2012 and September 2012 sales of equity securities as well as approximately $1.4 million in proceeds from the exercise of options and warrants, offset by the use of approximately $14.7 million in cash for operating activities and the investment of approximately $1.2 million in patents and other long-lived assets in
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