This mouse IgG2b is secreted by a cell line of BALB/c origin. It is specific for keyhole limpet hemocyanin (KLH) and does not react with human cells, making it suitable for use as a mouse IgG2b isotype control.
References
Procedures for the Collection of Diagnostic Blood Specimens by Venipuncture (H3-A6), 3rd Edition published by the National Committee for Clinical Laboratory Standards.