Mucosal-associated invariant T (MAIT) cells are an innate-like T-cell population restricted by the non-polymorphic, major histocompatibility complex class I-related protein 1, MR1. MAIT cells are activated by a broad range of bacteria through detection of riboflavin metabolites bound by MR1, but their direct cytolytic capacity upon recognition of cognate target cells remains unclear. We show that resting human MAIT cells are uniquely characterized by a lack of granzyme (Gr) B and low perforin...Expand abstract
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Copyright © 2015 Kurioka et al. This work is licensed under the Creative Commons
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MAIT cells are licensed through granzyme exchange to kill bacterially sensitized targets.
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