Intestinal AbsorptionAbsorptionJejunumCaco-2 CellsBiological AvailabilityStrontium IsotopesIntestine, SmallIntestinesIleumMalabsorption SyndromesCalcium IsotopesDuodenumBiological TransportLymphAdministration, OralIntestinal MucosaAdjuvants, PharmaceuticSitosterolsXyloseFecesSerous MembraneAzetidinesP-GlycoproteinCephalexinBileTerfenadineBile Acids and SaltsPerfusionHartnup DiseaseSelenious AcidRats, WistarSymportersLymphatic SystemEnterocytesTrioleinEnterohepatic CirculationDipeptidesgamma-Glutamyl HydrolaseMicrovilliDietShort Bowel SyndromeSkin AbsorptionBiological Transport, ActiveRats, Sprague-DawleyFlavanonesPhytosterolsPermeabilityCholesterolZinc