FD Rapid TimmStain™ Kit
Timm’s sulphide silver method has so far been considered a very sensitive technique for demonstrating metal ions, in particular zinc in the central nervous system. The principle of this technique is that metals in the tissue can be transformed histochemically to metal sulphides. Subsequently, metal sulphides catalyze the reduction of silver ions by a reducing agent to metallic grains that are visible under a light or electron microscope.Studies using this technique have provided a better understanding of not only the localization and distribution of zinc but also its possible function in the brain1. However, the reliability and complexity of Timm’s sulphide silver staining have been major obstacles to the widespread application of this technique.FD Rapid TimmStain Kit is designed based on the methods described by Haug1 and Sloviter2. The reagents and procedure of the FD Rapid TimmStain Kit have been optimized to achieve a high degree of both specificity and sensitivity for the demonstration of metal ions, especially zinc in the brain of experimental animals. The kit can be used with both frozen and paraffin sections.
A light microscope
Permount is a registered trademark of Fisher Scientific.References:
Haug FMS. (1973) Heavy metals in the brain: a light microscope study of the rat with Timm’s sulphide silver method. Methodological considerations and cytological and regional staining patterns. Springer-Verlag Berlin Heidelberg New York.
Sloviter RS. (1982) A simplified Timm stain procedure compatible with formaldehyde fixation and routine paraffin embedding of rat brain. Brain Res. Bulletin. 8:771-4.