Method and kit for making a polysaccharide-protein conjugate
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United States of America Patent
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Sep 10, 1996
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Dec 23, 1994
filing date -
Mar 9, 1993
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Abstract
A method and kit for making a polysaccharide-protein Schiff base conjugate. A polysaccharide is oxidized with an oxidizing agent and combined with a protein in the presence of a macromolecular crowding agent to form a Schiff base. Preferably, the macromolecular crowding agent is a soluble linear polymer selected from the group consisting of polyvinylpyrrolidone, polyethylene glycol, dextran, nonylphenol-ethoxylates, polyvinyl alcohol, and mixtures thereof. Most preferably, the macromolecular crowding agent is a mixture of polyvinylpyrrolidone and polyethylene glycol. The microparticles or substantially dissolved microparticles are immunogenic and are useful for inducing an immune response when administered to humans or animals.
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