to determine the effect of low and high levels of dietary proteins plus low doses of phenobarbital ( pb ) on the induction of drug-metabolizing enzymes , weanling male and female sprague-dawley rats were fed , ad libitum , diets containing 3.5 ( low protein , lp ) , 26 ( normal protein , np ) , and 42 % ( high protein , hp ) casein for 33 days .
C0012177
dietary proteins
C0033684
protein