The kidney (figs 1-4), bladder and penis (fig. 5) after Nuck, Bertin and Duverney. Engraving by Benard, late 18th century.

Licence: Public Domain Mark

Credit: The kidney (figs 1-4), bladder and penis (fig. 5) after Nuck, Bertin and Duverney. Engraving by Benard, late 18th century. Wellcome Collection. Source: Wellcome Collection.