The disclosure provides methods for promoting affinity maturation, and in particular in vivo affinity maturation, of antibodies. The disclosure also provides a system of affinity maturation of an antibody as well as compositions comprising antibodies generated from methods described herein and polynucleotides encoding such systems.

Systems and methods are presented that provide for improved NK cell function. In preferred aspects, NK-92 cells express recombinant er/LSP-IL-15 to so render the NK-92 cells independent of exogenous cytokines and to provide extracellular immune stimulation.

Systems and methods are presented that provide for improved NK cell function. In preferred aspects, NK-92 cells express recombinant er/LSP-IL-15 to so render the NK-92 cells independent of exogenous cytokines and to provide extracellular immune stimulation.