EPCAM and neoplasm: As indicated in Table 3, the most common CD133 aptamer used for research has the sequence: 5′-CCCUCCUACAUAGGG-3′, and EpCAM aptamer with the sequences 5′-ACGUAUCCCUUUUCGCGU-3′ or 5′-GCGACUGGUUACCCGGUCG-3′ is frequently used as a targeting ligand for CSCs in different tumor types.