Fig. 4.
Influence of opioid antagonist and NOS-inhibitor pretreatment administered after HBO2 treatment and prior to antinociceptive testing in mice. The data are expressed as the mean ± S.E.M. of 8–12 mice per group. Significance of difference: ***, p < 0.001, compared to the vehicle pretreatment group (post-hoc Bonferroni test).