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': 'The components of Innate immunity that are active against viral cells include \nSelect and explain. \nA. NK cells, B. Memory T cells, C. Cytotoxic cells, D. B cells', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Natural killer (NK) cells are large, granular lymphocytes morphologically related to T cells, which make up 10-15% of blood leukocytes. NK cells contribute to innate immunity by providing protection against viruses and other intracellular pathogens. NK cells have the ability to recognize andkill virus-infected cells and tumour cells. Cytotoxic T cells - Phagocytosis. B cells - Antibody production. Memory T cells - Cell-mediated immunity. Ref : Ananthanarayana textbook of Microbiology 9th edition Pgno: 137', 'role': 'assistant'}]