EN
The effect of Stymulen, a regulator of plant (corn) growth, on the induction of various forms of cytochrome P-450 in rat liver was tested by the CYPIA test. Stymulen given to rats intraperitoneally at a single dose of 1 x 50 and 1 x 80 mg/kg body weight or at a cumulative dose of 3 x 50 mg/kg b.w. did not induce CYP-4501A (the 3-methylcholantrene type). A slight induction of the CYP-4502B cytochrome (phénobarbital type) was observed.