T follicular helper (TFH) cells are characteristically defined by their CXCR5 positivity and homing to B cell follicles in secondary lymphoid organs (SLO). An expanded subpopulation of functionally comparable and phenotypically similar PD-1CXCR5CD4 T cells were recently identified in breast cancer (BC) and rheumatoid arthritis (RA) to have beneficial or detrimental roles, respectively, but are they inflammatory tissue effector TFH cells?
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http://dx.doi.org/10.1016/j.it.2017.10.003 | DOI Listing |
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