Summer Glau guest stars in a scene from the March 15, 2012 episode of Grey's Anatomy.
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Cristina Yang in a scene from the March 15, 2012 episode of Grey's Anatomy.
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Yang interacts with a patient on Grey's Anatomy.
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Yang interacts with a patient in a photo from the March 15, 2012 episode of Grey's Anatomy.
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Cristina stares down Meredith in this photo from Grey's Anatomy. It's a shot from the very unusual "What If..." episode on 2/2/12.
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What has changed in the alternate world of Grey's Anatomy? Cristina's hair and Mer's demeanor, for starters.
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Hey Cristina! Meredith tries to get through to her co-worker in this scene from the installment "If/Then."
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Cristina is seen here during a very special Grey's Anatomy episode. It's the installment that wonders what might have happened if various things went differently.
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Cristina Yang in the January 12, 2012 episode of Grey's Anatomy.
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The Seattle Grace team laces 'em up in the October 27, 2011 episode of Grey's Anatomy. Here's a shot of Mer and Cris.
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A shot from the October 6, 2011 episode of Grey's Anatomy. The doctors, as always, are being pushed to the limit.
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Drs. Webber and Yang in a photo from the October 6, 2011 episode of Grey's Anatomy.
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Grey's Anatomy Quotes

Meredith: You're me.
Amelia: What?
Meredith: You're me before Derek. I can be here for you. I can do this. I get you. I can be a twisted sister for you. Just tell me how do you want to play this?

Did you say it? 'I love you. I don't ever want to live without you. You changed my life.' Did you say it? Make a plan. Set a goal. Work toward it, but every now and then, look around; Drink it in 'cause this is it. It might all be gone tomorrow."

Meredith (closing voiceover)