Figure 1.
Schematic illustration of the label-free electrochemical immunosensor for CA19-9 detection.
Abbreviations: CA19-9, carbohydrate antigen 19-9; AuNPs@PThi, polythionine-Au composites; BSA, bovine serum albumin; GCE, glassy carbon electrode.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.