chapter 1 Enteric Targeting Through Enteric Coating / chapter 2 New Experimental Coating Material for Colon-Specific Drug Delivery / chapter 3 Pharmacokinetic Considerations in the Design of Pulmonary Drug Delivery Systems for Glucocorticoids / chapter 4 Lipid-Based Formulations for Oral Administration: Opportunities for Bioavailability Enhancement and Lipoprotein Targeting of Lipophilic Drugs / chapter 5 Topical Application of Drugs: Mechanisms Involved in Chemical Enhancement / chapter 6 Drug Targeting by Retrometabolic Design: Soft Drugs and Chemical Delivery Systems / chapter 7 Neoglyco- and Neopeptide Albumins for Cell-Specific Delivery of Drugs to Chronically Diseased Livers / chapter 8 Gene Delivery with Artificial Viral Envelopes / chapter 9 Evolution of Viral Liposomes: Improvements and Applications / chapter 10 Targeting of Viral Vectors for Cancer Gene Therapy