US9468655B2 - Compositions and Methods Including Recombinant B Lymphocyte Cell Line Including at Least One Endogenous Gene Expressing at Least One Endogenous Membrane Immunoglobulin Reactive to a First Antigen and Including at Least One Exogenously Incorporated Nucleic Acid Expressing at Least One Exogenous Secreted Immunoglobulin Reactive to a Second Antigen | Patent Bear