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R. K. WINKELMANN, M.D.

AMA Arch Derm. 1960;81(3):417-421.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

Night blue, or nacht blau, has been used in Europe for a decade to stain acid-fast organisms. Its introduction by Hallberg¹ as a useful stain for Mycobacterium tuberculosis and Mycobacterium leprae unfortunately did not create any further interest in its potentialities. In a series of investigations concerning low-temperature mycobacteria in hairless mice, the specific keratinophilia of night blue was noted. In pursuing this matter, I^2,3 found that the mast cells of the rat, mouse, and hamster stained selectively with night blue. It is the purpose of this paper to organize some of the knowledge about the technique of staining with night blue, so it can be used in work with the skin.

The staining technique depends on the alcohol differentiation of the dye-protein complex produced by incubation for one hour at 60 C. Most tissues quickly lose their affinity for night blue in alcohol; a few do not . . . [Full Text PDF of this Article]

Author Affiliations
Rochester, Minn.

Section of Dermatology, Mayo Clinic and Mayo Foundation. The Mayo Foundation, Rochester, Minn., is a part of the Graduate School of the University of Minnesota.

Footnotes
Submitted for publication May 7, 1959.

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