Effects of proton and roentgen radiation on the rectum of the rat.
D000818:Animals; D008722:Methods; D011522:Protons; D011830:Radiation Effects; D011833:Radiation Injuries, Experimental / Q000473:pathology; D051381:Rats; D012007:Rectum / Q000473:pathology / Q000528:radiation effects*; D013679:Technology, Radiologic; D001743:Urinary Bladder / Q000473:pathology
D011522:Protons