Fig. 2

Summary of the differences in median skinfold thickness (mm) after bovine PPD injection in the corticosteroid, control and pre-sensitised groups at day 3 (A), after bovine (B) and avian (C) PPD injection in the corticosteroid group at 48 h and 72 h, and after bovine and avian PPD injection in the pre-sensitised group at days 0 and 3 (D). The frequency of skinfold thickness measures observed in each group is correlated with the box of the figure whose medians are represented as the black lines. Significant differences are described in the boxplot as follows: *** p < 0.001, **p = 0.01, *p < 0.1