AbsorptionIntestinal AbsorptionCholesterol, DietaryMice, Inbred AKRCholesterolBile Acids and SaltsGamma RaysSkin AbsorptionBiological AvailabilityElasmobranchiiSkates (Fish)Spectrophotometry, AtomicJejunumX-Ray Absorption SpectroscopySpectrophotometryEfficiencyIronKineticsSpectrum AnalysisIntestine, SmallEfficiency, OrganizationalAdministration, OralZincZinc RadioisotopesPhytic AcidAnimal FinsWaterMolecular Sequence DataSpectrophotometry, UltravioletUltraviolet RaysCathode Ray TubeX-RaysTime FactorsIron RadioisotopesDuodenumIntestinesZinc IsotopesHydrogen-Ion ConcentrationFeces