black shield protecting from virus germs and bacteria icon isolated transparent background immune system concept |
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| navigate by keyword : virus infection bacteria microbe medical medicine corona china coronavirus shield icon isolated transparent black security safety protection protect guard wuhan covid19 ncov disease pandemic illness health immune system microbiology cell biology flu science human illustration background organism symbol influenza micro epidemic microscopic pathogen bacterium viral germ microorganism sign |
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| Black Shield protecting from virus, germs and bacteria icon isolated on transparent background. Immune system concept. Corona virus 2019-nCoV. Green square button.. |
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