Cytori Therapeutics is a regenerative-medicine company based in San Diego. The company develops and manufactures medical devices that enable the therapeutic use of the adult stem and regenerative cells naturally found within adipose (fat) tissue. Cytori was the result of a 2002 merger between Macropore Biosurgery and StemSource. The company operated under the Macropore name until 2005 when it changed its name to Cytori Therapeutics. Cytori also has operations in Japan and the United Kingdom.