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An electron microscope study of fibril: matrix arrangements in high- and low-crimp wool fibres.

Authors
Type
Published Article
Journal
Australian journal of biological sciences
Publication Date
Volume
31
Issue
3
Pages
231–240
Identifiers
PMID: 727992
Source
Medline
License
Unknown

Abstract

The crimped structure of wool fibres is generally associated with a bilateral arrangement of ortho- and paracortical cells. The most obvious difference between these cell types is in the arrangement and relative proportions of microfibril and matrix proteins that constitute the fibre cortex. In the low-crimp fibres examined there is a poorer expression of bilateral cortical asymmetry compared with the high-crimp wools together with a higher proportion of intermediate-staining mesocortical cells. These mesocortical cells exhibit much more regular arrays of microfibrils than paracortical cells. It is suggested that the packing arrangement of microfibrils in all three cell types is basically hexagonal and the variation observed in mature cells is a function of the fibril:matrix ratio.

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