following 17-19 months of feeding 500 p.p.m . sodium phenobarbital ( pb ) in the diet to yellow avy/a and agouti a/a ( c3h x vy ) f1 hybrid male mice , two subgroups differing in responsiveness to pb with respect to promotion of hepatocellular adenomas and body weight gain were observed within each genotype .
C0282303
sodium phenobarbital
C0031412
pb