Abstract
The alchemist's symbol for arsenic is a menacing coiled serpent, and perhaps rightly so. The element of arsenic has certainly earned a great deal of infamy from the reign of the Borgias to the novels of Agatha Christie, and in more recent times as a toxic contaminant of drinking water. But the symbolic serpent also coils around the staff of Aesculapius, an international symbol for medicine; arsenic the poison is also arsenic the healer.
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More From: Proceedings of the National Academy of Sciences of the United States of America
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