Study on transportation of Xiaochaihu Tang in Caco-2 cell model Application of Caco-2 cell model in peroral absorption of Chinese materia medica and its mechanism Influence of vitamin E tocopherol polyethylene glycol succinate 1000 on baohuoside I across membrane transport of Caco-2 monolayer model Influence of vitamin E tocopherol polyethylene glycol succinate 1000 on baohuoside I across membrane transport of Caco-2 monolayer model Study on oral absorption enhancers of Astragalus polysaccharides Transport mechanism of swertiamain metabolite across Caco-2 model Study on transport mechanism of baicalin in Scutellariae Radix extracts and effect of Angelica Dahurica extracts on transport of baicalin by Caco-2 cell monolayer model