HCAR3 and viral infectious disease: The same GPCRs identified in cord DCs, with exception for GNG11 and HCAR3 (not differentially expressed), were also found to be differentially expressed in adult DCs after viral infection, with some already repressed after 6 h of infection, many unchanged, and CCL2 and RGS20 upregulated fivefold to sixfold (Figure 5B; Table 9).