Abstract
We present a method for an epi-illumination immunohistochemical double staining approach. The method combines the use of an immuno-alkaline phosphatase technique and the immunogold-silver technique, visualized with epifluorescence and epi-polarization illumination, respectively. Out of six tested alkaline phosphatase activity-revealing methods, only the reaction product obtained with the Becton Dickinson CAS Red kit showed an intense red fluorescence with a rhodamine filter set and no signal with epi-polarization illumination. The silver precipitate did not exhibit any signal with the rhodamine filter set. This allows separate observation and photographic recording of two antigens in one tissue section, an objective that cannot be achieved with conventional immunoenzyme double staining methods. The double epi-illumination approach presented is compatible with different immunoenzyme double staining protocols.
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Schedule a callMore From: The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society
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