Preview Clip of Grey's Anatomy Season 8, Episode 19: Meredith Passes Callie's Test (VIDEO) Tweet April 10, 2012 by Rebecca Martin Related: Grey's Anatomy, Season 8 Episode 19 , Sneak Peeks , Callie Torres , Meredith Grey , Season 8 Credit: YouTube Air date: April 12, 2012. Mer gets some good news on Grey's Anatomy Season 8, Episode 19: "Support System."
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