Table 1.

Experimental design for bioassay with BRB

Group	Treatment	No. of rats	Amount administered (ml)	Dose administered (mg/kg body weight)	Diet
1	DMSO + H2O*	25	0.2	0	Control AIN-76A
2	None	25	0	0	AIN-76A + 5% BRB
3	NMBA	50	0.2	0.25†	Control AIN-76A
4	NMBA	50	0.2	0.25	AIN-76A + 5% BRB

^*DMSO + H₂O, vehicle for NMBA.

^†NMBA (0.25 mg/kg body weight) injected s.c. thrice per week for 5 weeks.