https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13995031Edit ImageSaveSaveEditCropCustom TextStaff of Wellcome Physiological Research Laboratories (Ewins, Buxton, Burn, Glenny, Walpole, Sudmerson, O'Brien, Dale, Barger, MacAlister). Photograph.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseEditorial use only JPEGSmall JPEG 1200 x 913 px | 300 dpiLarge JPEG 3046 x 2318 px | 300 dpiFree DownloadStaff of Wellcome Physiological Research Laboratories (Ewins, Buxton, Burn, Glenny, Walpole, Sudmerson, O'Brien, Dale, Barger, MacAlister). Photograph.More