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Scanning microscopy of the tiro eye cosmetic powder applied to a lead-poisoned child’s eyelids

Scanning electron microscopy of the tiro eye cosmetic powder that was applied to the lead-poisoned child’s eyelids, revealing the presence of cubic shapes and stair-step cleavage, both of which indicate the presence of lead sulfide (also known as galena) -- Boston, Massachusetts, 2011. (From: Centers for Disease Control and Prevention. Infant lead poisoning associated with use of tiro, an eye cosmetic from Nigeria--Boston, Massachusetts, 2011. MMWR Morb Mortal Wkly Rep 2012b;61[30]:574-6. Photo from U.S. Geological Survey, Crustal Geophysics and Geochemistry Science Center. Field of view is approximately 100 µm wide. Public domain.)

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