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. 2020 Jul 29;202(1):93–105. doi: 10.1111/cei.13483

Fig. 1.

Fig. 1

Saliva protein levels among patient groups. Tukey box‐plots show (a) neutrophil elastase (NE), (b) secretory leucocyte protease inhibitor (SLPI) and (c) alpha1‐anti‐trypsin (α1AT) levels in healthy controls (HC), recurrent aphthous stomatitis (RAS) and Behçet’s disease (BD) patients; q = quiet episode/no ulcers; a = at least one active mouth ulcer regardless of other systemic symptoms. Each saliva sample was measured in duplicate. The Mann–Whitney U‐test was used to assess differences between two groups at a time. Significance based on two‐tailed 95% confidence interval (CI). *P < 0·05, **P < 0·01, ***P < 0·001.