<prompt> CD marker of MALT lymphoma is? -CD 3CD 5CD 20CD 40 1467.  <response>: MALTOMA is characterised by diffuse infilteration by monoclonal small B lymphocytes. CD 20 is a B cell marker.But its negetive for CD 5 Ref: Harsh Mohan textbook of pathology, 7th edition.Pg no.356,357 Ref Robbins 9e pg442 