42 citations
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January 2017 in “Genes” The gene KAP22-1 affects wool yield and fiber shape in sheep.
Variant G of the KRTAP20-1 gene improves wool curliness in Chinese Tan sheep.
2 citations
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May 2023 in “Journal of Advanced Research” Two mutations in KRT74 and EDAR genes cause sheep to have finer wool.
12 citations
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January 1934 in “Proceedings of the Royal Society of London Series B Containing Papers of a Biological Character” Stretched hair has a similar structure to natural silk, showing hair's elasticity involves reversible changes within its molecules.
January 1994 in “Nihon Chikusan Gakkaiho” Collagen fibrils in mink skin change structure during hair growth, becoming looser and thicker in the active phase.
8 citations
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December 2017 in “Small Ruminant Research” Variation in the TCHH gene affects wool curliness in sheep.
3 citations
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March 2023 in “Biology” Genes affecting wool fiber thickness in Angora rabbits were identified, which could help breed finer wool.
January 2026 in “Frontiers in Animal Science” Gentile di Puglia sheep have finer wool and more lanolin than Sarda sheep.
March 2026 in “World Rabbit Science” DKK4 can be used to improve wool quality in Zhexi Angora rabbits.
September 2016 in “Journal of dermatological science” The conclusion is that the variation in hair thinness in patients is mostly due to the amount of underdeveloped hairs, and treatments that thicken fine hairs might work for those with mild to severe conditions.
February 2026 in “Optics” Stretching wool changes its structure and improves fiber alignment.
18 citations
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September 2018 in “The Journal of Agricultural Science” Genetic variation in the KRTAP15-1 gene affects wool yield in sheep.
49 citations
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April 2010 in “International Journal of Cosmetic Science” Hair ages as the cuticle wears down, especially beyond 1 meter from the root, affecting its strength and shine.
9 citations
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July 2014 in “Skin research and technology” Stretching damages Caucasian hair's structure more easily than Asian hair.
24 citations
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October 2019 in “Genes” A new sheep gene, KRTAP36-1, may help breed sheep with better wool by reducing prickle factor.
December 2023 in “Animal research and one health” Certain circular RNAs are crucial for wool growth and curvature in goats.
5 citations
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May 2024 in “BMC Genomics” Different genes affect hair length in yaks.
1 citations
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January 2015 in “China Animal Husbandry & Veterinary Medicine” Four keratin genes are crucial for hair growth in Xinji fine wool sheep.
5 citations
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January 2021 in “Animal Production Science” Lipid metabolism affects wool fiber diameter in sheep.
95 citations
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March 2009 in “Differentiation” Gene expression in wool follicles changes with growth cycles, offering insights into wool and human hair growth.
3 citations
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August 2022 in “Biochemical Genetics” 14 citations
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September 2019 in “Forensic Science International Genetics” Hair keratin proteins can be reliably identified in hair as short as 0.12 cm, with 0.5 to 2 cm being the best length for analysis.
63 citations
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October 2005 in “Archives of Dermatology” Shorter, thinner hairs indicate AGA, while longer, thicker hairs suggest CTE; counting and measuring shed hairs helps diagnose hair loss type.
October 2025 in “Molecular Genetics and Genomics”
17 citations
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November 2017 in “Asian-Australasian journal of animal sciences” Certain gene mutations are linked to wool quality in sheep and could help in breeding for better wool.
10 citations
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June 2024 in “Frontiers in Genetics” Different sheep breeds share similar genetic factors affecting wool fineness.
7 citations
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June 2017 in “Gene” Overexpression of FGF5s makes Chinese Merino sheep grow longer and heavier wool.
March 2018 in “Journal of Experimental Biology” Hair curliness is caused by the arrangement and length of two different cell types.
2 citations
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January 2010 Tianzhu white yak hair varies in structure and density between fuzz and coarse hair.
25 citations
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January 1958 in “Elsevier eBooks”