1.   As it turns out, exposing rats to high temperatures triggers this same reaction.

2.   But when rats that had been pregnant were exposed to the carcinogens, the number of tumors was far lower.

3.   In his Columbia lab, vom Saal exposes rats to these estrogen-imitating chemicals, at extremely low doses.

4.   In the experiments, rats are exposed to a tone and mild electric shock at the same time.

5.   Sorg repeatedly exposes rats to formaldehyde to try to duplicate the sensitivity that might be occurring in humans.

6.   Scientists will design studies that expose rats to many doses of radiation, including the levels emitted by the phones.

7.   Cellular phones do not seem to cause cancer, according to a US study that exposed rats to strong doses of radiation similar to those emitted by cellular phones.

8.   The rats were then exposed to alcohol for five days.