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. 1985;83(5):409-11.
doi: 10.1007/BF00509201.

"Thiocyanate gold": small (2-3 nm) colloidal gold for affinity cytochemical labeling in electron microscopy

W Baschong, J M Lucocq, J Roth

"Thiocyanate gold": small (2-3 nm) colloidal gold for affinity cytochemical labeling in electron microscopy

W Baschong et al. Histochemistry. 1985.

Abstract

Reduction of HAuCl4 by NaSCN or KSCN produces colloidal gold particles of 2.6 nm in diameter and homogeneous in size (coefficient of variation approximately 15%). The AuSCN sol forms protein-gold complexes. The amount of protein required to form an AuSCN-protein complex is best determined in the electron microscope, where serial dilutions of protein with gold sol are inspected for the presence of aggregates. By immuno-electron microscopy SCN-gold complexed to protein A is active and visible as is shown by revealing alpha-amylase in rat pancreatic acinar cells.

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