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'Hygieia as a personification of hygiene: a woman holding up the palm of her hand on the left and holding the staff of Aesculapius on the right, with water in the background; advertising an exhibition in Düsseldorf on health and welfare. Colour lithograph after L. ten Hompel, 1926.' by Deutsches Hygiene-Museum Dresden. and Grosse Ausstellung Düsseldorf für Gesundheitspflege, soziale Fürsorge und Leibesübungen. Credit: Wellcome Collection. CC BY