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Arch Pathol. 1975 Oct;99(10):529-32.

Luxol Fast Blue MBSN-Levafix Red Violet E-2BL. A combined stain for myelin sheaths and glia fibers.


During investigations of reactive dyes, Levafix Red Violet E-2BL was found suitable for staining of glia fibers. Experiments were carried out on 37% formaldehyde-fixed human autopsy material. Paraffin sections were treated with Luxol Fast Blue MBSN as usual, differentiated until glia fibers were decolorized, and counter-stained in a 0.25% solution of Levafix Red Violet E-2BL in 0.25% acetic acid. Myelin sheaths were colored blue. Gila fibers, smooth muscle cells, and nuclei were stained red violet. Axons and connective tissue remained unstained; occasionally, coarse bundles of collagen showed patchy coloration. Polarization microscopic studies proved that Levafix Red Violet E-2BL is bound to well-oriented fibrous proteins in glia fibers. The similar staining and polarization microscopic properties of glia fibers and smooth muscle support previous findings that glia fibers contain a myosin-like protein.

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