the immune system immunity natural protection human body against external factors bacteria viruses various |
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| navigate by keyword : vaccination influenza dangerous fever health medicine vitamin pandemic disease hygiene illness biology therapy antioxidant fight prevention epidemic injection treatment virus organism care strong boost healthcare cell coronavirus ill medical healthy protect safety flu detox immune background immunity attack infection shield protective immunization microbiology system protection sick vaccine generated |
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| The immune system. Immunity. Natural protection of the human body against external factors, bacteria, viruses, various diseases. A shield on the guard of a human being |
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