KRT8 and urinary bladder carcinoma: With the excellent electrical properties of MoS2, a MoS2 field-effect transistor sensor array was constructed to detect two bladder cancer markers, nuclear matrix protein 22 (NMP22) and cytokeratin 8 (CK8) simultaneously, with ultra-low detection limits of 0.027 and 0.019 aM achieved, respectively (Yang et al., 2020); A biosensor based on bilayer MoS2 back-gate field-effect transistor can detect glucose solution with high sensitivity, with a lower detection limit of 300 nM achieved (Shan et al., 2018).