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. 2015 Sep 2;10(9):e0137195. doi: 10.1371/journal.pone.0137195

Table 1. Classification of circulating Tfh-like cell subsets.

(CD45RO⁺CXCR5⁺ CD4⁺CD3⁺ cells)	PD1, ICOS, CCR7 expression
Tfh1-like (CXCR3⁺ CCR6^-)	PD1⁺⁺ ICOS⁺ CCR7^low	PD1⁺ ICOS^- CCR7^int	PD1^- ICOS^- CCR7^Hi
Tfh2-like (CXCR3^- CCR6^-)	PD1⁺⁺ ICOS⁺ CCR7^low	PD1⁺ ICOS^- CCR7^int	PD1^- ICOS^- CCR7 ^Hi
Tfh17-like (CXCR3^- CCR6⁺)	PD1⁺⁺ ICOS⁺ CCR7^low	PD1⁺ ICOS^- CCR7^int	PD1^- ICOS^- CCR7 ^Hi

This classification is based on the model proposed by Schmitt et al [19].