This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': 'Perforins are produced bya) Cytotoxic T cellsb) Suppressor T cellsc) Memory helper T cellsd) Plasma cellse) NK cells \nSelect and explain. \nA. a, B. b, C. ae, D. ad', 'role': 'user'}, {'content': "Answer: C \nExplanation: Perforins \n\nPerforins are hole forming proteins, cause transmembrane pores through which cytotoxic factors enter the cell and destroy it by apoptosis.\nPerforins are produced by:\n\n\nCytotoxic T cells\xa0\xa0 → Robbin's 218\nN.K. Cells → Ananthanarayan 126", 'role': 'assistant'}]