Table 2. Histopathological lung lesion scores at different intervals in group A and B mice after challenge with wild H3N8 equine influenza virus.

Days post challenge	Cellular infiltrations		Interstitial lesions		Necrotic changes		Total histopathological lesion
	Group A	Group B	Group A	Group B	Group A	Group B	Group A	Group B
1	1.17 ± 0.31c)	2.33 ± 0.21	1 ± 0.25	1.83 ± 0.31	0.17 ± 0.17b)	1.67 ± 0.42	1.33 ± 0.21c)	2.33 ± 0.21
3	1.5 ± 0.34b)	2.83 ± 0.31	1.5 ± 0.34a)	3.17 ± 0.31	0.67 ± 0.49a)	3 ± 0.26	1.5 ± 0.22a)	3.17 ± 0.17
5	1.67 ± 0.22	2.67 ± 0.22	1.33 ± 0.21b)	2.83 ± 0.17	0.67 ± 0.42	1.67 ± 0.56	1.67 ± 0.21a)	3 ± 0.26
9	1.17 ± 0.31c)	2.33 ± 0.21	1.17 ± 0.31c)	2.5 ± 0.43	0.33 ± 0.21	1.17 ± 0.54	1.17 ± 0.17	2 ± 0.26
14	0.83 ± 0.17	1.83 ± 0.40	0.17 ± 0.17c)	1.67 ± 0.49	0.17 ± 0.17	0.5 ± 0.34	0.5 ± 0.34	1.33 ± 0.42
28	0.83 ± 0.17	1 ± 0.37	0 ± 0	0.33 ± 0.21	0 ± 0	0 ± 0	0.17 ± 0.17	0.33 ± 0.21

Each value represents mean ± SEM (n=6). a) Indicates significant difference P<0.001, b) P<0.01, c) P<0.05, between groups in the same row in two way ANOVA, Bonnferoni post hoc test.