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"If my life were to end next week ... I want to feel like I have made a contribution," said Carol Martin, seen here holding her 2018 Boston Marathon medal. Jesse Costa/WBUR hide caption

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Jesse Costa/WBUR

"I'm one of the lucky ones," says Judy Perkins, of the immunotherapy treatment she got. The experimental approach seems to have eradicated her metastatic breast cancer." Courtesy of Judy Perkins hide caption

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Courtesy of Judy Perkins

Therapy Made From Patient's Immune System Shows Promise For Advanced Breast Cancer

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