https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13991656Edit ImageSaveSaveEditCropCustom TextPhilosophical transactions of the Royal Society of London.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 741 x 1200 px | 300 dpiLarge JPEG 1064 x 1724 px | 300 dpiFree DownloadPhilosophical transactions of the Royal Society of London.More