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': 'True about interferon -a) It is virus specificb) It is Bacteria specificc) Produced from Bacteriad) Effective against viral infectione) It is species specific \nSelect and explain. \nA. ab, B. bc, C. cd, D. de', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Interferon\n\nInterferons are a family of host coded proteins produced by cells on induction by viral or nonviral inducers.\n\n\nInterferon production is a natural defense mechanism possessed by vertebrate cells against viral infection.\n\nProperties of interferons \n\nInterferons are species specific, in that interferon produced by one species can protect only cells of the same or related species against viral infections but not cells of unrelated species.\nThe activity is not virus specific, in that interferon induced by one virus can confer protection against infection by the same or unrelated viruses.\n\n\nInterferons are inactivated by proteolytic enzymes but not by nucleases or lipases.\nInterferons are stable over a wide range of pH (2-10) except IF-γ, which is labile at pH - 2.', 'role': 'assistant'}]