Table 2.

Incidence of signs of nausea-related behavior in rats that received a control injection or one of three different doses of buprenorphine.

Buprenorphine dose (mg per kg body weight)	n	Day 0	Day 1	Day 2	Day 3
0	8 (4 male, 4 female)	0	0	0	0
1.3	8 (4 male, 4 female)	0	0	1 female	1 female
3.9	8 (4 male, 4 female)	0	1 male	2 (1 male, 1 female)	3 (1 male, 2 female)
6.5	8 (4 male, 4 female)	0	0	0	2 (1 male, 1 female)