https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14018929Edit ImageSaveSaveEditCropCustom TextIvan Petrovitch Pavlov. Photograph after a photograph taken in 1934.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 926 x 1200 px | 300 dpiLarge JPEG 2350 x 3046 px | 300 dpiFree DownloadIvan Petrovitch Pavlov. Photograph after a photograph taken in 1934.More