CD4 and infection: Comparative analysis between PGs and ECs (Fig. 3A) demonstrated that lower expression of total ICs in resting CD4+ T cells was observed during all phases in ECs (0, 21, and 133 days post-infection, Fig. 3B), which was also observed in resting CD4+ TCM but only during the chronic infection phase (133 days post-infection, Fig. 3C).