Biosafety Levels 1, 2, 3 & 4

Biological safety levels are ranked from one to four and are selected based on the agents or organisms on which the research or work is being conducted. Each level up builds on the previous level, adding constraints and barriers.
Each biological safety level builds on the previous level, adding constraints and barriers based on the agents or organisms in which the research or work is being conducted. 

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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 Stock Vector Image & Art

87 questions with answers in BIOSAFETY

Biosafety. Use and Care of Microorganisms This area of science