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"Four Grey&amp;#039;s Anatomy stars have signed new deals. Justin Chambers, Sara Ramirez, Chandra Wilson and James Pickens Jr. have each signed on for two further seasons of the medical drama, TVLine reports.   The new deals mean that Chambers, who plays Dr. Alex Karev, and his co-stars will appear in the eleventh and twelfth seasons of Grey&amp;#039;s Anatomy, should they be commissioned. ABC have yet to confirm that the drama will continue beyond its current tenth season, but it is looking likely that the network is committed to further seasons.   Fellow stars Patrick Dempsey and Ellen Pompeo signed similar two-year deals in January.  Series original Sandra Oh will depart the show in the season ten finale on May 15, with co-stars Tessa Ferrer and Gaius Charles also making their final appearances. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/tv/greys-anatomy/news/a568632/greys-anatomy-four-stars-sign-on-for-two-further-seasons/>