Toxicology Tutor II is the second of three toxicology tutorials being produced by the Toxicology and Environmental Health Information Program of the National Library of Medicine, U.S. Department of Health and Human Servicess.  Toxicology Tutor I covered basic principles of toxicology while Toxicology Tutor II presents toxicokinetics.  These tutors are written at the introductory college student level.  They are intended to provide a better understanding of the toxicology literature contained in the National Library of Medicine's Chemical and Toxicological databases.