Abstract: Nucleic acids and vectors for interfering with the expression of membrane efflux transport proteins in cells that express such proteins are provided. Also provided are cells and cell lines comprising such nucleic acids and vectors. Methods for screening chemicals and biomolecules for gastrointestinal absorption in animals, and kits for practicing such methods are also provided.

Abstract: Nucleic acids and vectors for interfering with the expression of membrane efflux transport proteins in cells that express such proteins are provided. Also provided are cells and cell lines comprising such nucleic acids and vectors. Methods for screening chemicals and biomolecules for gastrointestinal absorption in animals, and kits for practicing such methods are also provided.

Abstract: Nucleic acids and vectors for interfering with the expression of membrane efflux transport proteins in cells that express such proteins are provided. Also provided are cells and cell lines comprising such nucleic acids and vectors. Methods for screening chemicals and biomolecules for gastrointestinal absorption in animals, and kits for practicing such methods are also provided.

Abstract: Nucleic acids and vectors for interfering with the expression of membrane efflux transport proteins in cells that express such proteins are provided. Also provided are cells and cell lines comprising such nucleic acids and vectors. Methods for screening chemicals and biomolecules for gastrointestinal absorption in animals, and kits for practicing such methods are also provided.

Abstract: Nucleic acids and vectors for interfering with the expression of membrane efflux transport proteins in cells that express such proteins are provided. Also provided are cells and cell lines comprising such nucleic acids and vectors. Methods for screening chemicals and biomolecules for gastrointestinal absorption in animals, and kits for practicing such methods are also provided.

Abstract: Nucleic acids and vectors for interfering with the expression of membrane efflux transport proteins in cells that express such proteins are provided. Also provided are cells and cell lines comprising such nucleic acids and vectors. Methods for screening chemicals and biomolecules for gastrointestinal absorption in animals, and kits for practicing such methods are also provided.

Abstract: Nucleic acids and vectors for interfering with the expression of membrane efflux transport proteins in cells that express such proteins are provided. Also provided are cells and cell lines comprising such nucleic acids and vectors. Methods for screening chemicals and biomolecules for gastrointestinal absorption in animals, and kits for practicing such methods are also provided.

Abstract: There is provided a water-in-oil (w/o) micro emulsion which readily converts to an oil-in-water (o/w) emulsion by the addition of aqueous fluid to the w/o microemulsion, whereby an water-soluble biologically-active material in the aqueous phase is released for absorption by the body. The w/o microemulsion contains a preferred high purity short chain monoglyceride surfactant. The w/o microemulsion is particularly useful for storing proteins and the like for ling periods of time at room temperature and above until they are ready for use, at which time the addition of aqueous fluid converts the microemulsion to an o/w emulsion and release the protein.

Abstract: There is provided a water-in-oil (w/o) microemulsion which readily converts to an oil-in-water (o/w) emulsion by the addition of aqueous fluid to the w/o microemulsion, whereby any water-soluble biologically-active material in the aqueous phase is released for absorption by the body. The w/o microemulsion is particularly useful for storing proteins and the like for long periods of time at room temperature and above until they are ready for use, at which time the addition of aqueous fluid converts the microemulsion to an o/w emulsion and releases the protein.

Abstract: There is provided a water-in-oil (w/o) microemulsion which readily converts to an oil-in-water (o/w) emulsion by the addition of aqueous fluid to the w/o microemulsion, whereby any water-soluble biologically-active material in the aqueous phase is released for absorption by the body. The w/o microemulsion is particularly useful for storing proteins and the like for long periods of time at room temperature and above until they are ready for use, at which time the addition of aqueous fluid converts the microemulsion to an o/w emulsion and releases the protein.

Abstract: There is provided a water-in-oil (w/o) microemulsion which readily converts to an oil-in-water (o/w) emulsion by the addition of aqueous fluid to the w/o microemulsion, whereby any water-soluble biologically-active material in the aqueous phase is released for absorption by the body. The w/o microemulsion is particularly useful for storing proteins and the like for long periods of time at room temperature and above until they are ready for use, at which time the addition of aqueous fluid converts the microemulsion to an o/w emulsion and releases the protein.

Abstract: Lipoproteins are separated from their aqueous solutions, e.g., blood, by treatment with PFC emulsified with phospholipid and then separating the emulsion containing the apolipoproteins. The latter are readily separated from the emulsion.