Summary
New commercial samples of Methyl Green (Gurr Certistain), Pyronine G (Gurr Certistain) and Pyronin Y (Polysciences) have been investigated using spectrophotometry, thin layer chromatography and nuclear magnetic resonance, in addition to standardized simultaneous and sequential staining methods using purified Ethyl Green and pure Pyronin Y as reference dyes.
The Methyl Green was found to be Ethyl Green contaminated with Crystal Violet. It did not have any advantages compared with Ethyl Green supplied by American dye companies. The Pyronine G sample was Pyronin Y with a high dye content that gave good staining results when used with purified Ethyl Green. Pyronin Y from Polysciences was found to be essentially pure Pyronin Y.
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ANDERSEN, A. P., LYON, H., JAKOBSEN, P. & HØYER, P. E. (1986) Nucleic acid staining with the Methyl Green—Pyronin method. A comparison of the use of pure dyes and commercially available dyes.Histochemistry 84, 279–80.
HOROBIN, R. W. (1969) The impurities of biological dyes: their detection, removal, occurrence and histological significances — a review.Histochem J. 1, 231–65.
HOROBIN, R. W. (1980)The Use of Pure Dyes for Biological Staining. Colnbrook, (U.K.): Koch Light.
HØYER, P. E., LYON, H., JAKOBSEN, P. & ANDERSEN, A. P. (1986) Standardized Methyl Green—Pyronin Y procedures using pure dyes.Histochem. J. 18, 90–4.
JAKOBSEN, P., ANDERSEN, A. P., LYON, H. & TREPPENDAHL, S. (1983) Preparation and characterization of Pyronin Y.Microsc. Acta 87, 41–7.
JAKOBSEN, P., ANDERSEN, A. P. & LYON, H. (1984a) Preparation and characterization of Methyl Green tetrafluoroborate.Histochemistry 81, 177–9.
JAKOBSEN, P., LYON, H. & TREPPENDAHL, S. (1984b) Spectrophotometric characteristics and assay of pure Pyronin Y.Histochemistry 81, 99–101.
LILLIE, R. D. (1977)H. J. Conn's Biological Stains, 9th edn. pp. 282, 590, Baltimore: Williams and Wilkins.
MERCK GROUP (1985)Certistain Standards for Microscopical Staining, pp. 40–1, 62–63. Poole (U.K.): BDH Diagnostics Division, BDH Chemicals Ltd.
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Lyon, H., Jakobsen, P., Høyer, P. et al. An investigation of new commercial samples of Methyl Green and Pyronin Y. Histochem J 19, 381–384 (1987). https://doi.org/10.1007/BF01680456
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DOI: https://doi.org/10.1007/BF01680456