Relative expression of M-vRNA and of host transcripts in infected precision-cut lung slices (PCLS). The slices were infected with the H3N2 SIV strain at different time points (3 h, 8 h, and 24 h). Green dots stand for non-infected PCLS and red dots for infected PCLS (minimum one slice/pig for each time point, total 5 pigs, n = 5-12 and median value). Comparisons were made using one way ANOVA test and Tukey’s post-test. Differences were considered significant when P < 0.05 (*), P < 0.01 (**) or P < 0.001 (***).