Functional Polymer Conjugates for Medicinal Nucleic Acid Delivery, by Ernst WagnerBiodegradable Nanoparticles as Vaccine Adjuvants and Delivery Systems: Regulation of Immune Responses by Nanoparticle-Based Vaccine, by Takami Akagi, Masanori Baba and Mitsuru AkashiBiodegradable Polymeric Assemblies for Biomedical Materials, by Yuichi Ohya, Akihiro Takahashi and Koji Nagahama PEGylation Technology in Nanomedicine, by Yutaka Ikeda and Yukio NagasakiCytocompatible Hydrogel Composed of Phospholipid Polymers for Regulation of Cell Functions, by Kazuhiko Ishihara, Yan Xu and Tomohiro KonnoDesign of Biointerfaces for Regenerative Medicine, by Yusuke Arima, Koichi Kato, Yuji Teramura and Hiroo IwataAdvances in Tissue Engineering Approaches to Treatment of Intervertebral Disc Degeneration: Cells and Polymeric Scaffolds for Nucleus Pulposus Regeneration, by Jeremy J. Mercuri and Dan T. SimionescuFunctionalized Biocompatible Nanoparticles for Site-Specific Imaging and Therapeutics, by Ranu K. Dutta, Prashant K. Sharma, Hisatoshi Kobayashi and Avinash C. Pandey