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
[{'content': 'bcl2 in B-cell lymphoma the translocation involving- \nSelect and explain. \nA. t (8 : 14), B. t (8 :12), C. t(14:18), D. t(14 : 22)', 'role': 'user'}, {'content': 'Answer: C \nExplanation: 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 t(14;18) in tumor cells. Ref: Harshmohan textbook of pathology pg 356', 'role': 'assistant'}]