Grocott's Methenamine Silver (GMS) Eosin Stain Kit is intended to identify fungal organisms and Pneumocystis jiroveci (formerly known as carinii) in tissue sections on the Artisan Link and Artisan Link Pro Staining Systems. Fungi and Pneumocystis jiroveci are stained black while other tissue elements are stained pink. This stain is not recommended for cytology specimens.