High-security biological laboratory. View of a researcher at work in a high-security (level 4) laboratory. The researcher carries a container with experimental mice. He wears an air-proof, fire-proof integral suit and helmet of polyethylene chloride. He receives oxygen through an air tube on his waist. A level 4 laboratory is used for highly dangerous biological research, for instance on viruses. The bomb-proof steel laboratory contains air-locks and filters, decontamination rooms, 24-hour security and contamination alarms. Photographed at Centers for Disease Control (CDC) in Atlanta, USA.
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