POLYMER DERIVATIVES AND POLYETHYLENE GLYCOLDERIVATIVES FOR USE IN THE MANUFACTURE OF THERAPEUTIC AND DIAGNOSTIC AGENTS AND IMAGING AGENTS FOR DIAGNOSTIC PURPOSES; POLYMER DERIVATIVES AND POLYETHYLENE GLYCOL DERIVATIVES FOR USE IN THE MANUFACTURE OF COSMETIC AND PHARMACEUTICAL PREPARATIONS AND SUBSTANCES; POLYMER BEADS FOR USE IN MANUFACTURING; POLYALKYLENE GLYCOLS FOR USE IN THE MANUFACTURE OF THERAPEUTIC AND DIAGNOSTIC AGENTS AND IMAGING AGENTS FOR DIAGNOSTIC PURPOSES; LIPOSOMES,PROTEINS AND...