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Masson's trichrome is a three-colour staining procedure used in histology. The recipes emerged from Claude L. Pierre Masson 's (1880–1959) original formulation have different specific applications, but all are suited for distinguishing cells from surrounding connective tissue .
The first staining protocol that was described as "trichrome" was Mallory's trichrome stain, which differentially stained erythrocytes to a red colour, muscle tissue to a red colour, and collagen to a blue colour. Some other trichrome staining protocols are the Masson's trichrome stain, Lillie's trichrome, and the Gömöri trichrome stain.
It is used as a stain in histology and in organic synthesis. [2] Histology. Phosphomolybdic acid is a component of Masson's trichrome stain. [3] Organic synthesis
Acid fuchsin is used as the nuclear and cytoplasmic stain in Mallory's trichrome method. Acid fuchsin stains cytoplasm in some variants of Masson's trichrome. In Van Gieson's picro-fuchsine, acid fuchsin imparts its red colour to collagen fibres. Acid fuchsin is also a traditional stain for mitochondria (Altmann's method).
Lillie's trichrome is a combination of dyes used in histology. It is similar to Masson's trichrome stain , but it uses Biebrich scarlet for the plasma stain. It was initially published by Ralph D. Lillie in 1940. [ 1 ]
In Masson's trichrome, it is used as a counterstain to acid fuchsin. It is a component of Papanicolaou stains together with eosin Y and bismarck brown Y. [1] In pap smears, Light Green SF confers a blue staining for the cytoplasm of active cells such as columnar cells, parabasal squamous cells, and intermediate squamous cells. [3]
Acid fuchsin has wide use in histology, [1] and is one of the dyes used in Masson's trichrome stain. [2] This method is commonly used to stain cytoplasm and nuclei of tissue sections in the histology laboratory in order to distinguish muscle from collagen .
Ponceau 2R, Xylidine ponceau, Ponceau G, Red R, Acid Red 26, Food Red 5, or C.I. 16150 is a red azo dye used in histology for staining.It is easily soluble in water and slightly in ethanol.