https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13964247Edit ImageSaveSaveEditCropCustom TextTwelve doctors standing in test tubes. Colour lithograph by A. Barrère, ca. 1910.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 604 px | 300 dpiLarge JPEG 3500 x 1761 px | 300 dpiBest Quality JPEG 3832 x 1928 px | 300 dpiFree DownloadTwelve doctors standing in test tubes. Colour lithograph by A. Barrère, ca. 1910.More