https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14018935Edit ImageSaveSaveEditCropCustom TextJohann Ittig. Line engraving by C. Romstet.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 753 x 1200 px | 300 dpiLarge JPEG 2153 x 3433 px | 300 dpiFree DownloadJohann Ittig. Line engraving by C. Romstet.More