FCER1A and infection: At day 9 after LCMV-Cl13 infection, iregDC expressed increased levels of the monocyte-associated proteins CCR2 (C-C chemokine receptor type 2) and FcγRI (CD64) in conjunction with the other monocyte-associated proteins FcεR1α, FcγRII/III, and Ly6C (Fig 4A and 4B).