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