ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,560,606, issued on Feb. 24, was assigned to BioMadison Inc. (Del Mar, Calif.).

"Compositions for determining vaccine potency" was invented by Ward C. Tucker (Monona, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Compositions for determining the efficacy and/or potency of a vaccine preparation are described herein. Splenocytes from immunized animals are isolated and can be frozen. Upon thawing such cells are activated by exposure to a series of dilutions of a vaccine preparation being tested and a series of dilutions of a reference vaccine with known characteristics. Cells secreting immunogen-specific antibody and cells secreting nonspecific antibo...