chapter 1 Bacterial and plant toxins general mode of action / chapter 2 Diphtheria toxin structure, function, and its clinical applications R.C. RATTS AND J.C. VANDERSPEK / chapter 3 Ricin A -- Structure, function and its clinical applications / chapter 4 Pathways of delivering toxins into the cytosol of target cells / chapter 5 Engineering immunotoxins for improving their therapeutic activity / chapter 6 Ligand�receptor interactions studied with chimeric proteins H. LORBERBOUM-GALSKI / chapter 7 Chimeric proteins -- A novel approach for eliminating specific cell populations for targeted human therapy / chapter 8 Chimeric neurotoxins a molecular neurosurgery approach / chapter 9 Targeted immunotherapy of autoimmune diseases by chimeric toxins / chapter 10 Immunotoxins for targeted cancer therapy / chapter 11 Molecular targeting of brain tumors with cytotoxins -- Novel bacterial toxin-containing anti-brain tumor therapeutics / chapter 12 Toxin in the development of vaccines