Abstract: Polymeric delivery agents, delivery agent compounds and compositions comprising them which are useful in the delivery of active agents are provided. Methods of administration and preparation are provided as well.

Abstract: Compounds and compositions for the delivery of active agents are provided. Methods of administration and preparation are provided as well.

Abstract: This invention relates to microparticles and/or nanoparticles containing a delivery agent and/or an active agent. This invention also relates to pharmaceutical formulations and solid dosage forms, including controlled release solid dosage forms of active agent and a delivery agent.

Abstract: This invention relates to microparticles and/or nanoparticles containing a delivery agent and/or an active agent. This invention also relates to pharmaceutical formulations and solid dosage forms, including controlled release solid dosage forms of active agent and a delivery agent.

Abstract: Compounds and compositions for the delivery of active agents are provided. Methods of administration and preparation are provided as well.

Abstract: Methods for transporting a biologically active agent across a cellular membrane or a lipid bilayer. A first method includes the steps of: (a) providing a biologically active agent which can exist in a native conformational state, a denatured conformational state, and an intermediate conformational state which is reversible to the native state and which is conformationally between the native and denatured states; (b) exposing the biologically active agent to a complexing perturbant to reversibly transform the biologically active agent to the intermediate state and to form a transportable supramolecular complex; and (c) exposing the membrane or bilayer to the supramolecular complex, to transport the biologically active agent across the membrane or bilayer. The perturbant has a molecular weight between about 150 and about 600 daltons, and contains at least one hydrophilic moiety and at least one hydrophobic moiety.

Abstract: A device for quantitively collecting, preserving and mailing a fresh and wet specimen of fecal or other biological matter for later analysis comprises a tubular vessel defining a chamber closed at one axial end by a plug and restricted at the opposite end by a narrow aperture. A stopper for closing the open end of the vessel extends into a stick whose distal portion comprises indentations capable of retaining a portion of the biological matter when the stick is dipped into it. The distal portion of the stick is shaped and dimensioned to intimately and circumferentially contact the edge of the aperture so that the amount of matter introduced into the chamber is limited to the part having penetrated into the indentations. The shank of the stick is dimensioned to seal the aperture once the stopper has been screwed upon the open end of the vessel. The plug mounts a breakable hollow nib and is installed after introduction into the chamber of a metered volume of preserving solution.