Recombinant FcGR2B-CHO K1 cell line stably expressing full length human FcGR2B (isoform 1, GenBank Accession Number NM_004001.4). Crosslinking of antibodies bound to target by FcGR-expression cells can promote receptor clustering and increase downstream signaling. FcGR2B crosslinking is important for anti-TNFR receptor antibodies.