This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Pathology
CD marker of MALT lymphoma is? - 
Select and explain. 
A. CD 3, B. CD 5, C. CD 20, D. CD 40 1467.
C: CD 20
Answer: C: CD 20 
Explanation: 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 9/e pg442