On the other hand, M2 and M4 were found to be dominantly present in thyroid tissues of HT patients (Fig. 8b), with high expressions of plasmacytoid dendritic cell (pDC) marker genes CLEC4C and IL3RA, and macrophage marker genes CD163, C1QA, and C1QB, respectively (Fig. 8c). Here, CD163 is linked to hematocrit.