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Reflection contrast microscopy within chrome-alum haematoxylin stained thick tissue-sections
T J Filler1, C H Rickert, U K Fassnacht
1Institute of Anatomy, Westfälische Wilhelms-University, Münster, Germany.
Histochemistry
|June 1, 1994
Summary
Reflection contrast microscopy (RCM) can now visualize neurosecretory granules in thick tissue sections. This technique enables quantitative analysis of neurosecretion distribution in cytochemistry.
Area of Science:
- Microscopy
- Cell Biology
- Neuroscience
Background:
- Reflection contrast microscopy (RCM) is typically used for surface characterization and thin sections.
- Previous limitations restricted RCM's application in thicker biological samples.
- Accurate quantification of cellular components like neurosecretion has remained challenging.
Purpose of the Study:
- To extend the application of RCM for qualitative investigations in thick tissue sections.
- To develop a novel quantitative method for cytochemistry using RCM.
- To demonstrate RCM's utility in visualizing and quantifying neurosecretory granules.
Main Methods:
- Applied RCM to thick tissue sections of the rat supraoptic nucleus (SON).
- Utilized chrome-alum haematoxylin staining to highlight cellular structures.
- Combined RCM with grey-scale image analysis for quantification.
Main Results:
- RCM successfully visualized neurosecretory granules within thick tissue sections.
- Neurosecretory granules were the only stained structures producing reflections.
- RCM provided sharper contrast and distinct visualization compared to bright field microscopy.
- Quantification of neurosecretion distribution was achieved through RCM and image analysis.
Conclusions:
- RCM is effective for qualitative analysis in thick tissue sections, extending its application range.
- RCM enables precise visualization and quantification of neurosecretory granules.
- The integration of RCM with image analysis offers a powerful tool for cytochemical studies.