Abstract
The natural dye, curcumin (C.I. 75300) from turmeric, is obtained from the roots of Curcuma longa (Lillie 1977). Curcumin has scarcely been applied for histological work, and its fluorescence seems to have been overlooked. During the course of studies on fluorescent aluminum complexes (Del Castillo et al. 1987) we realized that this dye induces a green fluorescence of chromatin (Stockert et al. 1989). In this note we describe the fluorescence reaction of curcumin on semithin sections of olastic embedded tissues.
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