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MEST. Analysis of ear swelling at 24, 48, and 72 h post-4-OPA challenge (10%). Sensitization concentration is indicated on the graph. Measurements were taken on the right ear, whereas the left ear was included as a negative control. Bars represent means ± SE of 5 mice per group. Levels of statistical significance are denoted as *p ≤ 0.05 and ** p ≤ 0.01 as compared with background (BG) control.
