Table 2.

AWR scoring criteria.

Abdominal retraction reflex	Score
The mice are emotionally stable and free to move	0
The mice are emotionally unstable and occasionally twist their heads	1
The abdominal muscles contracted slightly but the abdomen did not lift off the ground	2
The abdominal back muscles contracted strongly, and the abdomen was lifted off the ground	3
The abdominal back muscles contracted strongly, the back was arched, and the abdomen, pelvis and perineum were lifted off the ground	4