https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13975408Edit ImageSaveSaveEditCropCustom TextThe chemical room in the Physiology Department at the Imperial Institute of Experimental Medicine, St Petersburg. Photograph, 1904.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 915 px | 300 dpiLarge JPEG 1607 x 1226 px | 300 dpiFree DownloadThe chemical room in the Physiology Department at the Imperial Institute of Experimental Medicine, St Petersburg. Photograph, 1904.More