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