Editor´s note

Summary form only given, as follows. With the increasing usage of microwaves in industrial and civilian applications,1 it is essential that their biological effects be determined and understood. It is hoped that this issue will acquaint the microwave engineer with the present understanding of these problems and the work which is being carried out in this area. It will also become apparent that this is a fertile field for research, and microwave engineers can certainly contribute to the understanding of these problems if they wish to get involved. The effort to organize this issue was enormous and we were very fortunate to have Dr. John M. Osepchuk as Guest Editor. His tremendous efforts in organizing this issue are greatly appreciated.