Applied histological techniques to process and embed tissue samples in paraffin for analysis.
Question
Applied histological techniques to process and embed tissue samples in paraffin for analysis.
Solution
Sure, here are the steps to process and embed tissue samples in paraffin for analysis:
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Fixation: The tissue sample is first fixed to preserve its structure. This is usually done using a solution of formaldehyde.
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Dehydration: The tissue is then dehydrated using increasing concentrations of alcohol. This is to remove all the water from the tissue.
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Clearing: The tissue is then cleared using a substance like xylene. This is to make the tissue transparent and to prepare it for the infiltration process.
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Infiltration: The tissue is then infiltrated with paraffin wax. This is done by placing the tissue in a bath of melted paraffin wax. The wax penetrates the tissue and provides support for the tissue structure.
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Embedding: The infiltrated tissue is then embedded in a block of paraffin wax. This is done by placing the tissue in a mold and pouring melted wax into the mold. The wax is then allowed to cool and harden.
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Sectioning: The embedded tissue is then cut into thin sections using a microtome. These sections are then placed on a glass slide for analysis.
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Staining: The sections are then stained using various dyes. This is to highlight the different structures within the tissue.
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Analysis: The stained sections are then analyzed under a microscope. This allows for the identification of any abnormalities within the tissue.
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