Fig. 1From: Microporous PdCuB nanotag-based electrochemical aptasensor with Au@CuCl2 nanowires interface for ultrasensitive detection of PD-L1-positive exosomes in the serum of lung cancer patientsSynthesis and characterizations of PdCuB MNs. A The detailed synthesis process of PdCuB MSNs. B TEM image of PdCuB MNs. C HRTEM image of PdCuB MNs. D HAADF-STEM image of PdCuB MNs. E–H STEM-EDS elemental mapping of PdCuB MNsBack to article page