MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY
A metal plate in Bergheim, Alsace. The symbol of a serpent wound round a rod, Rod of Asclepius, a Greek deity associated with healing and medicinal arts. Asclepius' attributes, the snake and the staff, sometimes depicted separately in antiquity, are combined in this symbol. Still used in many countries around the world.
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