Arnold N. Cohen, Jaime Kapitulnik, J. Donald Ostrow, Eugene A. Zenone, Cecile Cochrane, Lillian Celic, Heidemarie Cheney – 1 March 1985 – Jaundiced Gunn rats, treated with phenobarbital (60 mg per kg i.p. for 7 to 10 days) showed 25 and 36% decreases in mean plasma bilirubin levels in two experiments (p < 0.01). Kinetic studies with tracer 14C‐bilirubin revealed that there was no change in bilirubin turnover or total pool size due to phenobarbital, but a 49% increase in the hepatic pool and a 27% decrease in the cutaneous pool of bilirubin.