Influence of vitamin E tocopherol polyethylene glycol succinate 1000 on baohuoside I across membrane transport of Caco-2 monolayer model Effect of D-α-tocopherol polyethylene glycol 1000 succinate on inhibition of MCF-7cell proliferation by baohuoside I Influence of vitamin E tocopherol polyethylene glycol succinate 1000 on baohuoside I across membrane transport of Caco-2 monolayer model