https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13995297Edit ImageSaveSaveEditCropCustom TextJames Gregory. Stipple engraving by W. Holl.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 807 x 1200 px | 300 dpiLarge JPEG 2200 x 3270 px | 300 dpiFree DownloadJames Gregory. Stipple engraving by W. Holl.More