Fig. 9From: Chitosan-capped enzyme-responsive hollow mesoporous silica nanoplatforms for colon-specific drug deliverya Gastrointestinal mucosa irritation assay after oral administration of HMSS and HMSS–N=N–CS with the dose of 50 mg/kg for 7 days. b The weight changes of mice after oral administration for a week. Data were means ± SD (n = 3)Back to article page