Final answer:
Biosafety Level 3 (BSL-3) is designated for areas handling microbes or infectious agents with a moderate risk level to lab workers and the community. BSL-3 protocols involve special lab designs, security measures, and safety equipment to minimize risk of airborne transmission of potentially lethal diseases.
Step-by-step explanation:
The question you've asked refers to biosafety levels which are standards for the containment and handling of pathogenic microorganisms in research and medical laboratory settings. The protection level area you're asking about is related to biosafety level 3, or BSL-3, which is the appropriate biosafety level for research involving microbes or infectious agents that pose a moderate risk to laboratory workers and the community and are typically indigenous.
A BSL-3 environment is characterized by the containment of microbes that can cause serious and potentially lethal disease via inhalation. Laboratories operating under BSL-3 protocols must have controlled access, use specialized ventilation systems to prevent airborne transmission, and researchers must use appropriate personal protective equipment. Furthermore, biosafety cabinet class II or III is used for handling such pathogens to provide an additional level of protection.