Chitosan-Grafted Copolymers and Chitosan-Ligand Conjugates as Matrices for Pulmonary Drug Delivery

<table>Chemical structure of different types of carboxymethyl chitosan (CMC): (1) <i>N</i>-CMC, (2) <i>N,N</i>-CMC, (3) <i>O</i>-CMC, and (3) <i>N,O</i>-CMC (showing the modification at the D-glucosamine unit).</table>

International Journal of Carbohydrate Chemistry

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Figure 4

Figure 4: Chitosan-Grafted Copolymers and Chitosan-Ligand Conjugates as Matrices for Pulmonary Drug Delivery 