1.   Also, he said, there was a legitimate concern that the heat-treated products might not be as effective as the untreated ones.

2.   If any areas are left untreated, roaches will be repelled from treated hiding places into untreated ones.

3.   They discovered that the cells incubated with garlic failed to produce tumors, while the untreated ones soon killed the animals.

4.   After two weeks, the treated fish were fine, while the untreated ones had virtually vanished due to decay.

5.   The heart arteries of the transplanted mice contained only small amounts of plaque, while the untreated ones had huge clogs.