https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14004117Edit ImageSaveSaveEditCropCustom TextA variety of twenty infusoria and rotatoria. Line block.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 835 px | 300 dpiLarge JPEG 3200 x 2226 px | 300 dpiFree DownloadA variety of twenty infusoria and rotatoria. Line block.More