https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13965162Edit ImageSaveSaveEditCropCustom TextAn unkempt ape on crutches tells his mates that he has returned from being an experimental animal at a congress of gastroenterologists. Colour lithograph after G. De Finetti, ca. 1904.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 812 x 1200 px | 300 dpiLarge JPEG 2152 x 3180 px | 300 dpiFree DownloadAn unkempt ape on crutches tells his mates that he has returned from being an experimental animal at a congress of gastroenterologists. Colour lithograph after G. De Finetti, ca. 1904.More