https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14020582Edit ImageSaveSaveEditCropCustom TextOtto Heurnius. Line engraving by C. Ammon.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 857 x 1200 px | 300 dpiLarge JPEG 2346 x 3284 px | 300 dpiFree DownloadOtto Heurnius. Line engraving by C. Ammon.More