black shield protecting from virus germs and bacteria icon isolated yellow 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 yellow 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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| Black Shield protecting from virus, germs and bacteria icon isolated on yellow background. Immune system concept. Corona virus 2019-nCoV. Vector. |
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