Figure 1From: Targeted drug delivery for cancer therapy: the other side of antibodiesSchematic representation of antibody- and peptide-drug conjugates . ADC: (a) maleimido linker; (b) liner amino acid linker; For PDC: (c) liner peptide with spacer and bio-degradable group (X); (c) cyclic peptide with amide and disulfide bridge bearing spacer and bio-degradable group (X).Back to article page