What is a BSL-4 lab?
“Biocontainment can be classified by the relative danger to the surrounding environment as biological safety levels (BSL). As of 2006, there are four safety levels. These are called BSL1 through BSL4, with one anomalous level BSL3-ag for agricultural hazards between BSL3 and BSL4. Higher numbers indicate a greater risk to the external environment.” Newsweek 12/06/07 – “biosafety level 4″—the highest level of lab security. Once inside, the couple will study the world’s deadliest pathogens—those with no known cure….
