Biosafety level signs from BSL-1 to BSL-4. Simple flat vector biohazard caution signs used in laboratory. Symbol of hazard caused by biological microorganism, virus or toxin. premium vector by pyty

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red yellow vector element isolated sign orange risk danger protection medical dangerous hazard symbol icon biological toxic attention biology chemical lab laboratory science safety security protect forbidden weapon degree area biohazard virus level four signal caution restricted organism bio contamination alert beware bacteria warn toxin epidemic infectious biologic microogranism bsl

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