Fig. (5) Histopathology evaluation of lungs of immunized mice after infection with natural RSV A2 strain. A. Representative micrographs of the lung sections stained with Congo Red, haematoxylin and Alcian Blue. B. Quantitative analysis of epithelial damage score (left figure), inflammation score (middle figure) and eosinophilic infiltrate (right figure). Statistical analysis was performed with one-way ANOVA, followed by Tukey's multiple comparisons tests. *p<0.05; **p<0.01; ***p<0.001; ****p<0.0001.