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. Author manuscript; available in PMC: 2012 Feb 5.
Published in final edited form as: Virology. 2010 Nov 11;410(1):1–6. doi: 10.1016/j.virol.2010.10.027

Table 2.

Mortality and lesions in mice inoculated with PB2 single-substituted or parental viruses

Virus Mortalitya Average no. of days p.i. until deathb Histopathologic Score (0–3)c
1930-PB2-627K 8/10d 7.80 ± 1.09d 2.75 ± 0.34d
1930-PB2-627E 0/10d 14.00 ± 0.00d 1.10 ± 0.21d, f, g
1930-Tx/98PB2-627E 0/10e 14.00 ± 0.00e 2.05 ± 0.24f
1930-Tx/98PB2-627K 9/10e 7.30 ± 0.86e 2.30 ± 0.26g
Control 0/10 14.00 ± 0.00 0.00 ± 0.00
a

Mortality = number of mice that died after challenge/total number of mice in group

b, c

Values are the mean ± SEM

d, e, f, g

Significant difference between 2 groups (P < 0.05).