HistologyLesson 4 of 5 in the course Histological techniques

Hematoxylin and Eosin (H&E): Preparation, Chemistry, and Staining Patterns

5 flashcards · 4 quiz questions · 5 match pairs · 4 fill-in sentences · English

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Summary

H&E combines hematoxylin and eosin, which color different tissue components and create contrast.

These contrasting colors help distinguish the nuclear parts of cells from their cytoplasm. They also reveal the overall arrangement and distribution of cells in a tissue sample.

Note: These are conventional color patterns, not an exhaustive map of every tissue component. Some structures may stain differently or remain difficult to see.

All flashcards

What does H&E stand for?
H&E stands for hematoxylin and eosin, the two stains combined in this widely used histological staining method.
What is the typical color of nuclei in an H&E section?
Nuclei are typically blue or dark purple, principally because of hematoxylin staining.
What does eosin commonly stain?
Eosin commonly stains the cytoplasm and extracellular matrix pink, though shades can vary among structures.
Why is H&E considered useful for routine diagnosis?
It is quick and relatively inexpensive, reveals substantial microscopic anatomy, and can support evaluation of many histopathologic conditions.
When might a pathologist use a stain other than H&E?
When H&E does not provide enough contrast to identify a tissue feature, cellular structure, or chemical distribution, a more specific stain or method may be needed.

Quiz questions

  1. Which instrument is typically used to cut thin slices from a paraffin-embedded tissue block?Answer: A microtome.
  2. What is the active colorant in conventional hematoxylin staining?Answer: Hematein combined with a metallic mordant.
  3. Which staining method is used to visualize reticular fibers?Answer: Silver staining.
  4. Which structures tend to remain clear in H&E sections because they are hydrophobic?Answer: Fat-rich structures such as adipocytes.

Based on the Wikipedia article H&E stain, licensed CC BY-SA 4.0. Adapted into a summary, flashcards and quizzes.

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