Diphtheria Toxin, Diphtheria-related Fusion Protein Toxins, and the Molecular Mechanism of Their Action Against Eukaryotic Cells.- Anthrax Toxin and Genetic Aspects Regulating its Expression.- Shiga Toxins and Their Mechanisms of Cell Entry.- Cholera Toxin: Mechanisms of Entry Into Host Cells.- ExoU: A Cytotoxin Delivered by the Type III Secretion System of Pseudomonas aeruginosa.- Staphylococcal Alpha-toxin.- S. cerevisiae K28 Toxin - a Secreted Virus Toxin of the A/B Family of Protein Toxins.- Kluyveromyces lactis Zymocin and Other Plasmid-encoded Yeast Killer Toxins.- The Ustilago maydis Killer Toxins.- Zygocin - a Monomeric Protein Toxin Secreted by Virus-infected Zygosaccharomyces bailii.- Acidophilic Structure and Killing Mechanism of the Pichia farinosa Killer Toxin SMKT.- Ricin: Structure, Synthesis, and Mode of Action.