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Host-derived dsDNA following infection with RNA viruses. Mice were intratracheally inoculated with RSV (A2) (A) or influenza virus (H1N1, A/PR8/34) (B). Double-stranded DNA in the BALF was measured at various hours and days after infection. Three to nine mice were used per group. Data are presented as means ± SD. *p < 0.05, **p < 0.01.
