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. 2022 Feb 11;13:839585. doi: 10.3389/fmicb.2022.839585

FIGURE 2.

FIGURE 2

Negative regulation of macrophage polarization by cellular inhibitory receptors. The activation of CD200R, TIM3, and PD-1 suppresses STAT1-mediated macrophage polarization toward the M1 phenotype. CD47 interacts with SIRPα on the cell surface of macrophages and promotes macrophage polarization toward the M2 phenotype.