This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
[{'content': 'Which is concerned with cell mediated immunity? \nSelect and explain. \nA. B - Lymphocytes, B. T - Lymphocytes, C. Eosinophils, D. Monocytes', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., T - Lymphocytes (Ref: Ananthanarayan, 9th/e, p. 152)* Cellular (Cell mediated immunity) - T lymphocytes - defense against intracellular microbes.* Humoral immunity - B lymphocytes produces antibodies and convert into plasma cell which are responsible of immunogenic memory defense against extracellular microbes and their toxins.", 'role': 'assistant'}]