https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14019319Edit ImageSaveSaveEditCropCustom TextEngraving of heart muscle fibre, from Leeuwenhoek, Arcana...1722Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 995 px | 300 dpiLarge JPEG 1510 x 1252 px | 300 dpiFree DownloadEngraving of heart muscle fibre, from Leeuwenhoek, Arcana...1722More