https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13953995Edit ImageSaveSaveEditCropCustom TextExperiment on excretion of Carbonic acid gas by animals.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 1015 px | 300 dpiLarge JPEG 3500 x 2960 px | 300 dpiBest Quality JPEG 3912 x 3308 px | 300 dpiFree DownloadExperiment on excretion of Carbonic acid gas by animals.More