Description: The monoclonal mouse IgG1, kappa immunoglobulin is useful as an isotype control.This mouse IgG1,kappa is secreted by the MOPC-21/P3 cell, a mineral oil - induced plasmacytoma from BALB/c origin. MOPC-21/P3 has an unknown binding specificity and is used as an isotype control for mouse IgG1 antibodies.