Ebola virus research is conducted in maximum containment Biosafety Level 4, or BSL-4, laboratories, where investigators wear positive-pressure suits and breathe filtered air as they work. Here, scientists Gene Olinger (L) and James Pettit demonstrate BSL-4 laboratory procedures in BSL-4 training laboratory at US Army Medical Research Institute of Infectious Diseases (USAMRIID), Fort Detrick, Md. (Credit: USAMRIID courtesy photo) Antibodies improving Ebola survivability 131202-A-AB123-002

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