https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13996450Edit ImageSaveSaveEditCropCustom TextPhysiological laboratories at the Imperial Institute of Experimental Medicine and at the Imperial Military Medical Academy, St Petersburg. Photographs, 1904.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 947 px | 300 dpiLarge JPEG 1600 x 1262 px | 300 dpiFree DownloadPhysiological laboratories at the Imperial Institute of Experimental Medicine and at the Imperial Military Medical Academy, St Petersburg. Photographs, 1904.More