1.   And when a prepubescent mouse is exposed to the pheromones of an unrelated male, puberty begins.

2.   The mice were exposed to particulate doses that were higher than the maximum allowed by the Environmental Protection Agency.

3.   They exposed mice still in the womb to the chemical bisphenol A, at a level similar to what humans are exposed to routinely.

4.   When the mouse was exposed to the same virus later in life, it developed a diabetes-like disease.

5.   In the M.D. Anderson study, researchers exposed mice to UV radiation and found that sunburned skin cells created the Fas protein.

6.   The mice were exposed to the radiation for an hour a day at intensities equivalent to those emitted when phones are in use.