Ligand (peptide)‐conjugated liposomes: Biomarkers, such as the folate receptor, transferrin receptor, integrin (αvβ3), and CD44, which are overexpressed on cancer cells, have been utilized for tumor‐targeting liposomal delivery.[115] (Figure 7C) The receptors on cancer cells promote the intracellular uptake of the liposome by receptor‐mediated endocytosis followed by drug release in the targeting cells. The gene discussed is CD44; the disease is cancer.