Plant toxins and human health / P.S. Spencer and F. Berman -- Bacterial pathogens and toxins in foodborne disease / E.A. Johnson -- Shellfish toxins / A. Gago Martinez and J.F. Lawrence -- Mycotoxins in cereal grains, nuts and other plant products / J.P.F. D'Mello -- Pesticides: toxicology and residues in food / P. Cabras -- Polychlorinated biphenyls / D.L. Arnold and M. Feeley -- Dioxins in milk, meat, eggs and fish / H. Fiedler -- Polycyclic aromatic hydrocarbons diverse foods / M.D. Guillโen and P. Sopelana -- Heavy metals / L. Jorhem -- Dietary nitrates, nitrites and N-nitroso compounds and cancer risk with special emphasis on the epidemiological evidence / M. Eichholzer, F. Gutzwiller -- Adverse reactions to food additives / R.A. Simon and H. Ishiwata -- Migration of compounds from food contact materials and articles / J.H. Petersen -- Veterinary products: residues and resistant pathogens / J.C. Paige and L. Tollefson -- Prion diseases: meat safety and human health implications / N. Hunter -- The safety evaluation of genetically modified foods / M.J Gasson -- Genetically modified foods: potential human health effects / A. Pusztai, S. Bardocz, and S.W.B. Ewen -- Radionuclides in foods: the post-Chernobyl evidence / J.T. Smith and N.A. Beresford -- Radionuclides in foods: American perspectives / E.J. Baratta -- Widespread and continuing concerns over food safety / J.P.F. D'Mello