What are the applicable dyes for fluorescent staining of amyloids?

The applicable dyes for fluorescent staining of amyloids include Thioflavin T and Thioflavin S. These dyes bind specifically to amyloid fibrils and emit fluorescence when exposed to certain wavelengths of light, allowing for the visualization of amyloid deposits in tissues.

Thioflavine T is predominantly used for this purpose. It is a basic cell-permeable benzothiazole dye with a yellow component. Thioflavine T has an excitation peak at 349 nm and an emission peak at 454 nm and exhibits enhanced fluorescence on binding to amyloid fibrils. 

Thioflavine S is an acid dye that increases its fluorescence intensity on binding to amyloid fibrils. On staining with Thioflavine S, amyloids fluoresce an apple green color under fluorescence microscope.