The change of HA localization in TSG-6–/– RHE seems to be enhanced by TR infection.TSG-6+/+ and TSG-6–/– (a and b) RHE infected or not infected with TR and recovered 4 days after infection. (a) PAS staining with α-amylase pretreatment and hemalun counterstaining and HA detection. Bar = 20 μm. (b) HA released in culture medium measured by ELISA-like assay (mean ± SD; n = 4; two-way ANOVA). (c) HA remaining inside RHE (mean ± SD; n = 3; two-way ANOVA). CTL, control; HA, hyaluronan; PAS, periodic-acid schiff; RHE, reconstructed human epidermis; TR, Trichophyton rubrum.