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Blue lead line on gums and a blue patch on the inside of the cheek, opposite the lower incisors and canines

(right). Rachael H, at age 35 years. (Source: Oliver T. Lead poisoning in its acute and chronic forms: The Goulstonian Lectures, delivered in the Royal College of Physicians, March 1891. Edinburgh and London: Young J. Pentland, 1891. Public domain.)

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