This book is the first educational publication that comprehensively reflects the current level of technology for the production of the most important natural high-molecular compounds that are used in biomedical fields - polysaccharides (algae polysaccharides, cellulose and its derivatives, starch, mucopolysaccharides, chitin and chitosan, dextrans, pectins), proteins (collagen, gelatin, insulin, protein blood products, lectins) and natural polyesters.