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RAT FLEA 001-2400.jpg

Light micrograph of a whole mount, rat flea, Xenopsylla cheops, a vector or carrier of the bacteria, Yersina pestis, commonly known as bubonic plague.  Original magnification on this scan @ 2400 or a 35mm photographic slide = 12.5X; or on a 4x6" print, magnification = 50X.  Specimen photographed on Zeiss photomicroscope with optical staining, Rheinberg illumination.