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Carcinoembryonic antigen (CEA), which is typically associated with certain tumors and developing fetus, is widely used as a clinical tumor marker for some familiar cancers. In this work, a simple and sensitive electrochemical CEA sensor was developed by employing immunoreaction. Gold nanoparticle–decorated graphene composites (Au–GN) were successfully synthesized based on the reduction of HAuCl ...
An electrochemical cholesterol biosensor based on the direct electron transfer of cholesterol oxidase (ChOx) immobilized on gold nanoparticles-decorated multiwalled carbon nanotubes (GNPs-MWCNTs) was fabricated. GNPs-MWCNTs were prepared based on the reduction of HAuCl 4 in the presence of carboxyl group functionalized MWCNTs. Transmission electron microscopy image shows that rounded gold...
The quartz crystal microbalance (QCM) dynamic measurements indicate that ginsenoside Rh 2 (G-Rh 2 ) could inhibit the proliferation of adriamycin-resistant human breast cancer MCF-7 cells (MCF-7/ADR) in a concentration-dependent way. The combined treatment of G-Rh 2 with adriamycin (ADR) at non-effect dosage resulted in the higher inhibition efficiencies and the increased cell-death...
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