Figure 5.

IgA titer in BALF of infected aged mice. (A) IgA content was measured in BALF obtained from Ctr (mock‐infected mice) and infected mice treated with Placebo (I + Placebo) or GSH‐C4 (I + GSH‐C4) at day 8 pi. Mouse infection and the methods used for determination of IgA level are described in the Materials and Methods section. Values represent the mean ± SD of 5 mice, each run in duplicate (n = 10). Unpaired t test with Welch's correction: *P < 0.05; ***P = 0.0002 vs Ctr. (B) Ratio of IgA ng/viral M1 RNA copies in infected aged mice treated with Placebo or GSH‐C4. Unpaired t test with Welch's correction *P = 0.03 vs I + Placebo