Moreover, Tfh cells showed a decreasing trend at grade four, possibly due to the progression of lesions in later stages.
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Mesenchymal stromal cells attenuate primary sjogren's syndrome by modulating PD-1<sup>+</sup>CXCR5<sup>-</sup> T peripheral helper cells via galectin-1.
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There was no significant change in the proportion of Tfh cells, Treg cells, and Tph/Treg in all treatment groups, and the differences between all groups did not reach statistical significance.