AR and infection: At 8 days postinfection, the viral RNA levels in the brains and muscles of the RG/B5-wt infected mice increased, similarly to results reported in previous publications (36, 37), while the viral RNA levels in the brains and hind limb muscles of the RG/B5-AR-infected mice declined to undetectable levels, suggesting that RG/B5-AR replicated at a lower rate at the early stage of infection and was subsequently cleared.