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. Immunohistochemical analyses of psoriasin expression (Vector red) in full-thickness ex vivo skin biopsies. Biopsies were incubated with purified P. aeruginosa flagellin (700 ng/ml) in the absence and presence of rhamnolipids (37.5 µg/ml) in DMEM for 48 h. One representative experiment is shown (n = 3–6). SC: stratum corneum; E: living epidermis; D: dermis.
