<prompt> bcl2 in B-cell lymphoma the translocation involving-t 8 : 14t 8 :12t14:18t14 : 22  <response>: In all follicular lymphomas ,the tumour cells are positive for pan-B markers such as CD19 CD20 along with expression of BCL2 protein .Cytogenic studies show characteristic translocation t14;18 in tumor cells. Ref: Harshmohan textbook of pathology pg 356 