Figure 2: Intra-species and inter-species comparisons of heat inactivation characteristics for two caliciviruses. Mean ± standard deviation (n = 5 determinations for MNV, n = 4 determinations for FeCV, see Table 1) for (A) the temperature causing a 1 log10 decrease in infectivity in 30 s; and (B) z value (temperature causing a 1 log10 change in decimal reduction value [D]) for the caliciviruses murine norovirus (MNV) and feline calicivirus (FeCV). The mean values for the two caliciviruses are not significantly different from each other (P = 1.00 for panel A and P = 0.80 for panel B, by ANOVA).