Figure 1From: Respiratory Syncytial Virus (RSV) RNA loads in peripheral blood correlates with disease severity in miceDynamics of RSV RNA detection in the upper and lower respiratory tract. RSV was measured in nasal wash (NW), bronchoalveolar lavage (BAL), whole lung (WL) samples from 4-14 mice per time point per group from 4 independent experiments. Mice were intranasally inoculated with 107.6-8.3 PFU in 100 μL of RSV or sterile media (non-infected controls). (A) Compared with non-infected controls, which had no RSV RNA detected at any time point, RSV RNA loads detected by real-time PCR in WL and BAL were significantly higher than RSV loads detected in NW. Values represent means (± SD) of RSV log10 RNA copies/mL. Comparisons were made by One way ANOVA; * p < 0.001. (B). By plaque assay, RSV loads were significantly higher in BAL samples compared with NW on days 1 and 5 post-inoculation. From days 1 to 5 only viral loads measured in BAL samples were higher than those assessed in non-infected controls. Values represent means (± SD) of RSV log10 PFU/mL. One way ANOVA was used for comparisons; * p < 0.05.Back to article page