And each disaccharide unit contains several amino acids in a chain. So this purple dashed line basically corresponds to our amino acid chain. So this is our disaccharide unit that contains our amino acids. And these disaccharides create a long polysaccharide chain. And these are connected as a result of a type of glycocitic bond known as the beta one four glycocytic linkage. Now, notice that we have polysaccharide chain one, polysaccharide chain two, polysaccharide chain three, and so forth.