15.	Related Party Transactions

During the year ended December 31, 2010, we recognized $583,000 in product revenues, related party, from our sales transactions through our distribution partner, Green Hospital Supply, Inc. During the first quarter of 2009, we sold a StemSource® Cell Bank in Japan through our distribution partner, Green Hospital Supply, Inc. for $600,000. The sale was completed pursuant to our Master Cell Banking and Cryopreservation Agreement, effective August 13, 2007, with Green Hospital Supply, Inc. No similar sales occurred during the year ended December 31, 2011. As of December 31, 2011, 2010 and 2009, Green Hospital, Inc. was a beneficial owner of more than five percent of our outstanding shares of common stock.

During the year ended December 31, 2011, 2010 and 2009, we incurred approximately $166,000, $253,000 and $242,000 in royalty costs in connection with our sales of our Celution® 800/CRS System products to the European and Asia-Pacific reconstructive surgery market, pursuant to our License and Royalty Agreement and the Amended License/Commercial Agreement with the Olympus-Cytori, Inc. joint venture, respectively. As of December 31, 2011, 2010 and 2009, Olympus Corporation was a beneficial owner of more than five percent of our outstanding shares of common stock.

Additionally, refer to note 3 for a discussion of related party transactions with Olympus.