Mycobacterium Tuberculosis
Magnified 1000X, this fluorescent acid-fast stained (Smithwick) photomicrograph revealed the presence of Mycobacterium tuberculosis bacteria in a sputum smear, 1971. M. tuberculosis is an acid-fast bacterium (AFB), and is therefore, undetectable when stained using a Gram stain technique. However, using the Smithwick method, which employs acridine orange as the specific stain, the M. tuberculosis bacteria glow yellow under ultraviolet light microscopy. Image courtesy CDC/Ronald W. Smithwick. (Photo by Smith Collection/Gado/Getty Images).
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In stockPlease note: images depicting historical events may contain themes, or have descriptions, that do not reflect current understanding. They are provided in a historical context. .
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586446088
Collection:
Archive Photos
Date created:
January 01, 1971
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Archive Photos
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79852final.jpg
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