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Wright-Patterson Photo Gallery

200528-F-GH181-001.JPG
This schematic illustration shows how a disease is identified by the pattern of compounds detected in exhaled breath. Gas chromatography is an analytical technique that separates the chemical constituents of an air sample into components, with the retention time (the amount of time it takes for a given compound to pass through the chromatography column) being an identifying characteristic of each compound. (Courtesy illustration)