This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'CD marker for cytotoxic- \nSelect and explain. \nA. CD 4, B. CD 8, C. CD 21, D. CD 45', 'role': 'user'}, {'content': 'Answer: B \nExplanation: harshmohan textbook of pathology 7th edition. *T suppressor cells ,they suppresses immune reaction but are cytotoxic and actually destroy the invading antigen.these cells (cytotoxic T lymphocytes) carry CD8 molecules on their surface and hence are also called CD8+ cells.', 'role': 'assistant'}]