5Levet-Trafit B, Gruyer M S, Marjanovic M, et al. Estimation of oral drug absorption in man based on intestine permeability in rats [J]. Life Sci, 1996, 58(24) :359.
6Paula S Leppert, Joseph A Fix. Use of everted intestinal rings for in vitro examination of oral absorption potential[ J]. J Pharrn Sci, 1994, 83(7) :976.