Abstract: The present invention relates to genetically modified B cells and their uses thereof, for example, for the treatment of a variety of diseases and disorders, including cancer, heart disease, inflammatory disease, muscle wasting disease, neurological disease, and the like. In certain embodiments, the invention relates to an isolated modified B cell (“CAR-B cell), capable of expressing a chimeric receptor (“CAR-B receptor”), wherein said chimeric receptor comprises (a) an extracellular domain; (b) a transmembrane domain; and (c) a cytoplasmic domain that comprises at least one signaling domain. In various embodiments, the invention comprises an isolated modified B cell, wherein said B cell is capable of expressing and secreting a payload, wherein the payload is not naturally expressed in a B cell or is expressed at higher levels than is naturally expressed in a B cell. In various embodiments, the payload is an antibody or fragment thereof.

Abstract: The present invention provides a one phase, aqueous vaccine composition for immunizing an animal against infection by Mycoplasma hyopneumoniae, comprising: an immunizing amount of a Mycoplasma hyopneumoniae bacterin, an acrylic acid polymer in the concentration range between 0.8 and 1.2 mg/ml, and a pharmaceutically acceptable carrier, and substantially no oil. It is especially useful for immunizing a pig against infection by Mycoplasma hyopneumoniae for at least 20 weeks after a single administration, which effective immunity is reached within 4 weeks after vaccination.