CD79ab is expressed on lymphoma cell lines and primary tumor specimens. (A) CD19 and CD79b density on each indicated tumor cell line measured via ABC. (B) Expression of CD19, CD79a, and CD79b measured by IHC on primary lymphoma specimens. ABC, antibody-binding capacity; Burkitt’s, Burkitt’s lymphoma; FL, follicular lymphoma; MALT, lymphoma of the mucosa-associated lymphoid tissue.