Osmium Tetroxide-Potassium Ferrocyanide Intensification of a Diaminobenzidine Product Obtained by Photoconversion of a Fluorescent Label: a Study of Human Neutrophil Granules
Abstract:A diaminobenzidine posttreatment employing osmium tetroxide and potassium ferrocyanide was successfully used to intensify the diaminobenzidine stain formed by photoconversion of immunofluorescent labelling. Lactoferrin labelled granules became visible following the photoconversion process. Adequate diaminobenzidine staining was obtained after irradiating the cytospin preparations with ultraviolet light for 30-40 min. The diaminobenzidine stain had advantages over the fluorescent stain owing to its greater stab… Show more
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