Our previous study, comparing acute, primary mCMV infection in MC-competent C57BL/6 (B6) wild-type mice and MC-deficient mutants C57BL/6 (B6)-KitW-sh/W-sh (briefly sash mutants) [72], showed a strong MC-dependent wave of serum CCL-5 peaking on day two, post-infection (Figure 1, [73]). The gene discussed is CCL5; the disease is infection.