CC/Mount is an aqueous based permanent mounting medium with a very high refractive index which when applied to the stained tissue sections can store the tissue specimens permanently without the fading of the chromogens. Because of the superior refractive index of CC/Mount tissues mounted in this medium look like specimens mounted with organic based mounting media. No coverslipping is required with CC/Mount. However if coverslipping is required dried CC/Mount can be post mounted by using an organic based mounting medium. CC/Mount permits the long-term storage of antigens localized using organic insoluble chromogen substrates including AEC DAB fast Red BCIP/NBT BCIP/INT and fluorescent dyes like fITC and phycobiliproteins. The high pH of CC/Mount ensures increased stability of fluorescence intensity.