Irradiation at Ultra-High (FLASH) Dose Rates Reduces Acute Normal Tissue Toxicity in the Mouse Gastrointestinal System. - Ruan JL; Lee C; Wouters S; Tullis IDC; Verslegers M; Mysara M; Then CK; Smart SC; Hill MA; Muschel RJ; Giaccia AJ; Vojnovic B; et al. (International journal of radiation oncology, biology, physics, 2021)