Fig. 2From: Efficacy and safety of topical 0.1% cannabidiol for managing recurrent aphthous ulcers: a randomized controlled trialPseudomembranous ulcer size reduction. The Y-axis values represent percentages. Error bars display the standard error of the mean (SEM). Significance is portrayed as * p ≤ 0.05, ** p ≤ 0.01, and *** p ≤ 0.001Back to article page