https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/440599Edit ImageSaveSaveEditCropCustom TextSTS-131 NASA & Walter Reed Hospital Tissue Growth Experiments - Flight Preps. Original from NASA . Digitally enhanced by rawpixel.MorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseJPEGTIFFSmall JPEG 1200 x 773 px | 300 dpiLarge JPEG 2292 x 1476 px | 300 dpiTIFF 2292 x 1476 px | 300 dpi | 19.4 MBFree DownloadSTS-131 NASA & Walter Reed Hospital Tissue Growth Experiments - Flight Preps. Original from NASA . Digitally enhanced by rawpixel.More