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(Whitney Leaming/The Washington Post)
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3:31
Ava's hope: immunotherapy new weapon in leukemia fight
September 20, 2016
Health and Science
Ava's hope: immunotherapy new weapon in leukemia fight
September 20, 2016 | 3:54 PM GMT
8-year-old Ava Christiansen has been battling cancer for half her life. Now a new specialized cancer treatment may be able to keep her in remission.
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