Histological Cross-Section
Definition
A 5-10 micrometre thin section cut perpendicular to the skin surface, stained and mounted for light microscopy. Reveals dermis architecture (collagen orientation, osteoderm presence, pigment layer depth) that survives tanning.
- Thickness
- 5-10 micrometres
- Orientation
- Cut perpendicular to the skin surface
- Method
- Stained and mounted for light microscopy
- Application
- Species identification in leather and skin products
Common questions
What does the section reveal that surface examination cannot?+
Dermis architecture such as collagen bundle orientation, presence or absence of osteoderms, and pigment layer depth, all of which are species-diagnostic and remain visible even after tanning has obscured surface texture.
Why does the feature need to survive tanning?+
Tanning chemically alters skin and can destroy surface scale patterns or hair follicle traces used in other identification methods. Internal dermis architecture is more resistant to these processing changes, making it a reliable feature after manufacture.
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