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Jolon Dyer, Like Follicle, Like Fibre 150516.pdf (2.02 MB)

Like follicle, like fibre? Diameter and not follicle type correlates with fibre ultrastructure

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posted on 2023-05-03, 18:51 authored by Duane HarlandDuane Harland, Joy Woods, James Vernon, Richard Walls, David Scobie, Jeff PlowmanJeff Plowman, Charisa Cornellison, Tony Craven, Takashi Itou, Koike Kenzo, Shinobu Nagase, Stefan ClerensStefan Clerens, Jolon Dyer
The hair follicles of most mammals are of two types, primary and secondary. Primary follicles develop earlier and have a prominent arrectorpili muscle. Secondary follicles have less prominent muscles and are often clumped, sharing a common opening from which fibres emerge. It is not entirely clear what types of follicles occur in human scalps. Partly this is because human hairs have a uniform appearance, unlike many mammals in which robust primary hairs differ markedly from narrow secondary fibres. Some sheep breeds are an exception because like humans, wool fibres have a similar macro-scale appearance irrespective of follicle type. How deep does this similarity go? Using electron microscopy, we examined wool primary fibres from different breeds and contrasted them to secondary fibres. For fibres of similar diameter, there was no significant difference in the ultrastructure or proportion and distribution of cortex cell types in primary and secondary fibres. We conclude that fibre diameter is the most important fibre parameter with respect to structural differences between fibres, not whether the fibres originate from primary or secondary follicles.

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Rights statement

© 2016 by Trans Tech Publications Ltd. All Rights Reserved

Language

  • English

Does this contain Māori information or data?

  • No

Publisher

Trans Tech Publications Ltd

Journal title

Key Engineering Materials

ISSN

1662-9795

Citation

Harland, D., Woods, J., Vernon, J., Walls, R., Scobie, D., Plowman, J., … Dyer, J. (2016). Like follicle, like fibre? Diameter and not follicle type correlates with fibre ultrastructure. Key Engineering Materials, 671, 88–94. doi:10.4028/www.scientific.net/KEM.671.88

Contract number

A13301

Job code

154110

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