1.   The control rats received equal volumes of vehicle.

2.   The same amount of physiological saline was injected in the same manner into the control rats.

3.   The lesion area of the group treated with catalase was not significantly different from that of the control rats.

4.   A rough calculation can, however, be made based on the rate of fluid absorption observed in the control rats.

5.   The legs of a control rat that had not been irradiated were useless.

6.   A group of control rats received no X-rays.

7.   Ruda said the treated rats reacted to the heat about twice as fast as the control rats.

8.   Their reaction time was compared with that of control rats that had not been treated.

9.   When the heat test was administered on the right, or untreated paw, of the test rats, they reacted just as did the control rats.