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Fibre Ultrastructure.

Jeffrey E Plowman1, Duane P Harland2

  • 1AgResearch Ltd., Lincoln, New Zealand. Jeff.Plowman@agresearch.co.nz.

Advances in Experimental Medicine and Biology
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PubMed
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Mammalian hair fibers have three main parts: cuticle, cortex, and medulla. The cortex, composed of specialized cells and macrofibrils, is the largest component, influencing hair structure.

Keywords:
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Area of Science:

  • Animal Science
  • Biomaterials Science
  • Textile Science

Background:

  • Mammalian hair fibers possess a complex hierarchical structure.
  • Understanding this structure is crucial for applications in textiles and biomaterials.

Purpose of the Study:

  • To detail the structural components of mammalian hair fibers.
  • To describe the cellular composition and arrangement within the hair cortex.

Main Methods:

  • Structural analysis of mammalian hair fibers.
  • Microscopic examination of cellular components and macrofibril arrangements.

Main Results:

  • Hair fibers comprise cuticle, cortex, and medulla.
  • The cortex, 86-90% of weight, contains ortho-, meso-, and para-cortical cells.
  • Cortical cells are packed with macrofibril bundles of intermediate filaments and matrix.

Conclusions:

  • The structural organization of mammalian hair fibers is species- and cell-type dependent.
  • Variations in intermediate filament arrangement within cortical cells influence fiber properties.