Introduction

Gold chloride, 0.2% solution is a component of many special stains kits, such as the Reticulin contrast kit (staining according to Gordon Sweets), Grocott, and P.A.S.M. kits (staining according to Gomori Jones). In those kits, gold chloride provides toning of the section’s image, and also stabilization of the dye on the section. Using a gold chloride solution is usually followed by counterstains, such as Nuclear Fast Red (Kernechtrot) or Fast Green stain.