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Biosafety levels (BSLs) are a set of biocontainment precautions required to isolate dangerous biological agents in an enclosed laboratory facility. These levels are designed to protect laboratory personnel, the environment, and the community from exposure to potentially harmful microorganisms, including those used in recombinant DNA technology. There are four primary biosafety levels, each with increasing degrees of containment and safety protocols, corresponding to the risk associated with the agents handled. Biosafety Level 1 (BSL-1) is the lowest level and is suitable for work involving well-characterized agents that are not known to consistently cause disease in healthy adult humans. Laboratories operating at this level require standard microbiological _______ __________ ___ ___ __________ __________ ___ ________ _______ ____ __________ ___.
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