Helios Expression Is a Marker of T Cell Activation and Proliferation

• Tatiana Akimova,

  Affiliation Division of Transplant Immunology, Department of Pathology and Laboratory Medicine, The Children’s Hospital of Philadelphia and University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, United States of America

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• Ulf H. Beier,

  Affiliation Division of Nephrology, Department of Pediatrics, The Children’s Hospital of Philadelphia and University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, United States of America

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• Liqing Wang,

  Affiliation Division of Transplant Immunology, Department of Pathology and Laboratory Medicine, The Children’s Hospital of Philadelphia and University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, United States of America

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• Matthew H. Levine,

  Affiliation Department of Surgery, Penn Transplant Institute, Hospital of the University of Pennsylvania and University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, United States of America

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• Wayne W. Hancock

  * E-mail: whancock@mail.med.upenn.edu

  Affiliation Division of Transplant Immunology, Department of Pathology and Laboratory Medicine, The Children’s Hospital of Philadelphia and University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, United States of America

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