SEARCH Articles Figures Tables A Systems Biology Approach to Target Identification and Validation for Human Chronic Disease Drug Discovery Bone-targeting drug delivery systems Colon-targeted drug delivery systems Drug classification systems targets Drug delivery and targeting system Drug delivery systems site-targeted Drug delivery systems target-oriented Drug delivery/targeting system Drugs targeting Nanocarriers targeted drug delivery system Parenteral drug delivery and targeting systems Targeted drug delivery systems Targeted drug delivery systems design Targeted drugs The Ubiquitin-Proteasome System as a Target for Drug Development Tumor-targeted drug delivery systems Tumor-targeted drug delivery systems application