Gram Differentiation Without the Use of Iodine
- 1 January 1958
- journal article
- research article
- Published by Taylor & Francis in Stain Technology
- Vol. 33 (5) , 205-208
- https://doi.org/10.3109/10520295809111850
Abstract
A difference in the decolorization of the two types of cells is essential for Gram differentiation; Gram-positive cells being less decolorizable than Gram-negative cells. In practice, if a high molecular weight alcohol or aniline is used, a successful differentiation of both cells can be made by Gram procedures without iodine. Iodine plays a secondary role in that by its application, all cells are made less decolorizable than they would be without iodine. The formation of a dye-iodine precipitate within the cells seems to be the best explanation of the experimental findings.Keywords
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