1. This table presents the patients with post operative infection who were not receiving prophylactic antibiotics.
2. Scattering of radiation occurs when X-rays come into contact with radiopaque objects.
3. lon- izing radiation can cause chemical changes in the cells through which it passes and is able to affect the functioning of those cells.
4. The past history of this patient was complicated by diabetes mellitus, arterioscle- rotic heart disease and a long history of smoking.
5. Cases 1-3 were being investigated as to the cause of their radiation dermatitis.
6. Air pollution varies considerably from one area to another, being most pro- nounced in heavily industrialized zones