This course will emphasize the molecular biology principles and mechanisms underlying the toxicity of drugs and foreign agents. A journal club format is used to examine and critically evaluate the current hypotheses that explain the events at the molecular level which determine and affect toxicity. This course is suitable for graduate students of pharmacy, toxicology, pharmacology, biochemistry, environmental science, pathology, neuroscience, and medical biophysics. A weekly journal club will also be held after the lectures.