Season 4, Episode 7 Physical Attraction...Chemical Reaction
First Aired: November 9, 2007
George and Izzie's romantic chemistry is put to the test; Derek asks for more than just sex from Meredith; Mark develops an unexpected crush on a fellow surgeon; and Callie's job as chief resident is jeopardized after she delegates many of her duties to Bailey.
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- Premiered: March 27, 2005
- Rating: TV-14
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- Premise: The story revolves around five surgical interns and their supervisor's, showing their personal and professional lives. (more)