. Biological stains; a handbook on the nature and uses of the dyes employed in the biological laboratory. Stains and staining (Microscopy); Stains and Staining; Dyes. Nitro and Azo Dyes 75 Lillie (1940) suggests this dye (under the name Azofuchsin 3B) among possible substitutes for "ponceau de xyhdene" in the Masson trichrome technic. AZO FUCHSIN There is an occasional reference in histology to the use of an azo fuchsin. Such references are not sufficiently definite, how- ever, as there are several different azo fuchsins. The following, for example, are recognized in the Colour Index
. Biological stains; a handbook on the nature and uses of the dyes employed in the biological laboratory. Stains and staining (Microscopy); Stains and Staining; Dyes. Nitro and Azo Dyes 75 Lillie (1940) suggests this dye (under the name Azofuchsin 3B) among possible substitutes for "ponceau de xyhdene" in the Masson trichrome technic. AZO FUCHSIN There is an occasional reference in histology to the use of an azo fuchsin. Such references are not sufficiently definite, how- ever, as there are several different azo fuchsins. The following, for example, are recognized in the Colour Index: Aso fuchsin 4G C. I. No. 29 Azo fuchsin C. I. No. 30 Azo fuchsin 3B C. I. No. 54 (see p. 74) Azo fuchsin 6B C. I. No. 57 Azo fuchsin B C. I. No. 66 Azo fuchsin G C. I. No. 153 Azo fuchsin 6B, GNorS C. I. No. 154 All of these acid mono-azo dyes are closely related chemically to orange G and Bordeaux red. Of these, Lillie (1948) definitely specifies C. I. No. 153 as a con- stituent of his naphthol blue black tissue stain. c25 AZO ACID BLUE B C. I. NO. 59 There are various azo acid blues, with various shade designa- tions attached to the names, but whose synonymy is somewhat confusing.' They are mixtures; but an important constituent is regarded as being. NaSOj CisHisNaOoSXa; MoL Wt. {An acid dye) Menner (1935) has called for this dye in a stain for nervous tissue. Otherwise there seem to be few, if any, references to it in the biological Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Conn, H. J. (Harold Joel), 1886-1975. Geneva, N. Y. , Biotech Publications
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