image is a derivative work of the following images: File:Roentgen-x-ray-von-kollikers-hand.jpg licensed with PD-old 2008-09-11T19:44:34Z Cropbot 471x738
DescriptionX-ray by Wilhelm Röntgen of Albert vonKölliker'shand - 18960123-01.jpg English: An early X-ray picture (radiograph) by Wilhelm Röntgen (1845–1923)