Abstract
This report presents a method which can be used for counterstaining semithin sections of plastic embedded tissue. The sections are treated with a solution of silver lactate, followed by physical development. During the silver lactate treatment, silver ions are bound by various tissue components as metallic silver or silver sulfide. During physical development catalytic reduction of silver ions to metallic silver takes place where silver has been bound in the tissue, enlarging the silver deposits to microscopically visible dimensions. The amplified silver deposits give high contrast staining in yellow, brown and black suitable for both color and monochrome photography. The localization of the silver deposits is highly specific and may reflect several independent chemical processes. Examples in several tissues are shown.
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