POLYMER DERIVATIVES AND POLYETHYLENE GLYCOL DERIVATIVES FOR USE IN THE MANUFACTURE OF ANTIBODIES AND ANTIBODY FRAGMENTS TO BE USED AS THERAPEUTICS, DIAGNOSTICS, 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 ANTIBODIES AND ANTIBODY FRAGMENTS TO BE USED AS THERAPEUTI...