Patent 7485451 was granted and assigned to Regents of the University of California on February, 2009 by the United States Patent and Trademark Office.
Storage stable compositions of biological materials, including bioactive biological materials are provided in the form of a water-in-oil emulsion, comprising:(a) cellular material selected from living and/or dormant prokaryotic and/or eukaryotic cells and tissues, the cellular material being compatible with water-in-oil emulsions;(b) one or more oils selected from vegetable oils and fish oils;(c) an oil-soluble nonionic polymeric surfactant having a molecular weight of from about 2500 to about 15000; and(d) water.