https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14017137Edit ImageSaveSaveEditCropCustom TextUlf Svante von Euler. Photograph.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseEditorial use only JPEGSmall JPEG 796 x 1200 px | 300 dpiLarge JPEG 2160 x 3258 px | 300 dpiFree DownloadUlf Svante von Euler. Photograph.More