white shield protecting from virus germs and bacteria icon isolated black background immune system concept corona |
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| navigate by keyword : virus infection bacteria microbe medical medicine corona china coronavirus shield vector icon isolated white 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 concept |
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| White Shield protecting from virus, germs and bacteria icon isolated on black background. Immune system concept. Corona virus 2019-nCoV. Vector. |
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