After new brain lesions appear, House argues the arsenic was fighting her illness, leading to leukemia and a need for her parents' marrow.
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Every House moment featuring Gregory House, in story order. Played by Hugh Laurie.

Every House moment featuring Eric Foreman, in story order. Played by Omar Epps.

Every House moment featuring Chris Taub, in story order. Played by Peter Jacobson.

Every House moment featuring Thirteen, in story order. Played by Olivia Wilde.

Every House moment featuring Lawrence Kutner, in story order. Played by Kal Penn.