Complement C1q

C1q is co-expressed in healthy and tumor macrophages with human leukocyte antigen DR (HLA-DR), apolipoprotein E (APOE) and mannose receptor C-type 1 (MRC1) (MRC1) (CD206).
Revel et al. 2022 Trends in Cancer 8: 517

Complement C1q pops up as a marker of a tolerogenic and immunosupressive macrophage populations in both healthy and tumor tissues.
Revel et al. 2022 Trends in Cancer 8: 517

see also:
C1q macrophages