Fig. 2
The tissue cell viability determined by trypan blue dye exclusion test. Dexamethasone and clarithromycin demonstrated no significant influence on the viability of tissue cells from different phenotypic chronic rhinosinusitis at serial concentrations of 10−7 mol/L, 10−6 mol/L, and 10−5 mol/L, as compared to controls after 24-h tissue explant culture. An equivalent volume of methanol solution was used as control for dexamethasone and clarithromycin. CRSsNP, chronic rhinosinusitis without nasal polyps; Non-Eos CRSwNP, non-eosinophilic chronic rhinosinusitis with nasal polyps; Eos CRSwNP, eosinophilic chronic rhinosinusitis with nasal polyps; CLA, clarithromycin; DEX, dexamethasone. n = 5 for CRSsNP, and Eos and Non-Eos CRSwNP group