β-Alanine release from frog skeletal muscle determined by thin-layer chromatography

: Single oral administration of sovol (mixture of polychlorinated diphenyls) caused a significant induction of the liver monooxygenase system (MOS) in rats. The inducing effect persisted for 5 months. Liver MOS responses were similar in repeated and primary sovol administrations. Differences in the morphological liver changes have been detected following single and repeated administrations of sovol.