https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13967504Edit ImageSaveSaveEditCropCustom TextChristopher Wren making his first demonstration of a method of introducing drugs into a vein, before Dr Willis, 1667. Oil painting by Ernest Board.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 890 x 1200 px | 300 dpiLarge JPEG 2550 x 3438 px | 300 dpiFree DownloadChristopher Wren making his first demonstration of a method of introducing drugs into a vein, before Dr Willis, 1667. Oil painting by Ernest Board.More