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Questions and Answers
What is the best fixative for cytology?
What is the aim of tissue fixation?
What is the best fixative for histopathology?
Which step involves the removal of water and the infiltration of increasing concentrations of clearing agent?
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What is the aim of preventing tissues from dropping from slides during fixation?
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Study Notes
Best Fixatives
- Cytofixatives, such as ethanol and methanol, are optimal for cytology due to their ability to preserve cellular morphology and increasing contrast for microscopic examination.
- Formalin is widely regarded as the best fixative for histopathology, preserving tissue architecture and preventing autolysis.
Aim of Tissue Fixation
- Tissue fixation aims to preserve the structural integrity and morphology of cells and tissues by halting biochemical processes like autolysis and putrefaction.
- Ensures that tissue samples maintain their physiological state for accurate diagnostic analysis.
Step in Tissue Processing
- The step involving the removal of water and infiltration of increasing concentrations of a clearing agent is called "dehydration and clearing," crucial for preparing tissue for embedding in paraffin.
Prevention of Tissue Drop
- The primary aim of preventing tissues from dropping from slides during fixation is to maintain tissue integrity and prevent loss of cellular components for accurate microscopic evaluation.
- Proper fixation techniques ensure that samples adhere effectively to slides, enhancing the reliability of the histological examination.
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Description
Test your knowledge of histology slide preparation with this quiz. Learn about the steps involved in fixation, dehydration, clearing, embedding, sectioning, and staining of tissue samples. Gain insights into the aims of tissue fixation and enhance your understanding of histological techniques.
