A physician, in his surgery and workshop, examining a urine flask and referring to a book. Engraving by J.P. Le Bas after D. Teniers.

Licence: Public Domain Mark

Credit: A physician, in his surgery and workshop, examining a urine flask and referring to a book. Engraving by J.P. Le Bas after D. Teniers. Wellcome Collection. Source: Wellcome Collection.