ALEXANDRIA, Va., June 12 -- United States Patent no. 12,295,354, issued on May 13, was assigned to Regeneron Pharmaceuticals Inc. (Tarrytown, N.Y.).

"Non-human animals expressing exogenous terminal deoxynucleotidyltransferase" was invented by Lynn Macdonald (Harrison, N.Y.), Andrew J. Murphy (Croton-on-Hudson, N.Y.), Chunguang Guo (Thornwood, N.Y.), Natasha Levenkova (New York), Naxin Tu (Pleasantville, N.Y.), John McWhirter (Hastings-on-Hudson, N.Y.), Vera Voronina (Sleepy Hollow, N.Y.) and Faith Harris (Mamaroneck, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided herein are methods and compositions related to non-human animals that express exogenous Terminal Deoxynucleotidyltransferase (TdT)."...