Figure 2.

Effect of essential oil on hot plate test in mice. Each mouse was given a single dose of aspirin or essential oil or vehicle and then the hot plate latent response time of each animal was recorded at 0 (preadministration), 30, 60, and 90 min. The columns represent the median values and the vertical bars show the interquartile ranges. Mann–Whitney U test was used for statistical analysis. **P value less than 0.01 versus the control group and ^##P value less than 0.01 versus preadministration (0 min)