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September 2004 in “Journal of Anatomy” The inner root sheath evolved to help hair grow safely through the skin in mammals.
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March 1999 in “Developmental biology” The research shows that a gene called Wnt3 affects hair growth and structure, causing short hair and balding when overactive.
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August 2011 in “Dermatology Reports” Two siblings were found to have a genetic condition causing progressive hair loss and woolly hair, which may often be misdiagnosed.
The "sinuskissen" in cat hair follicles is mostly connective tissue, affecting fluid flow.
245 citations
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January 1998 in “Genes & Development” Hoxc13 gene is essential for hair, nail, and papilla development.
May 2025 in “Experimental Dermatology” A new genetic tool improves the study of hair growth and potential hair disorder treatments.
35 citations
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November 1931 in “Journal of Genetics” Hairless mice lack fur due to a genetic mutation affecting skin response, not hormone issues.
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August 1977 in “Journal of Morphology” The big-clawed shrew's sinus hair follicles are highly specialized for sensing vibrations.
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November 2008 in “Veterinary Dermatology” The mouse hairy ears mutation causes longer ear hair due to changes in gene expression.
Hairlessness in mammals is due to complex genetic changes in both genes and regulatory regions.
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May 1990 in “The EMBO Journal” Mice with extra sheep genes had hair that fell out and regrew in cycles.
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August 2015 in “PubMed” Human hair's strength comes from a honeycomb-like structure and macrofibrils.
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March 2022 in “Frontiers in Genetics” The research found specific genes that may cause longer hair in Tianzhu White Yak.
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September 2003 in “Archives of dermatology” Tiger tail bands in hair are caused by wavy hair fibers with melanin, unlike straight fibers in normal hair.
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August 2025 in “Journal of Investigative Dermatology” Genetic studies on hair traits can improve understanding of health and disease.
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February 2018 in “The Journal of Dermatology” A new mutation in the LIPH gene was found to cause a rare hair disorder in a Japanese boy.
January 2008 in “Medical Entomology and Zoology”
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May 2021 in “Nature Communications” Tissue stiffness affects hair follicle regeneration, and Twist1 is a key regulator.
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June 2021 in “Scientific Reports” Hair fiber shape and curvature are not significantly linked when ancestry is considered.
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April 2000 in “Developmental Dynamics” Whn is essential for hair growth, and its malfunction causes hair loss.
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August 2017 in “PloS one” Key genes linked to hair growth and cancer were identified in hairless mice.
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April 2010 in “Langmuir” Human hair surface varies in wettability, showing daily and monthly patterns.
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December 2022 in “International journal of molecular sciences” Plucked hairs can be used instead of skin biopsies to study hair traits because they contain specific cells related to hair.
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January 1989 in “Journal of Small Animal Practice” Abyssinian cats can have a hair abnormality that makes their coat look rough and dull.
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February 1989 in “Journal of The American Academy of Dermatology” Children with loose anagen hair have easily pluckable hair due to root sheath problems, and it might improve without treatment.
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December 2015 in “PloS one” Cryopreserved mouse whisker follicles can grow hair when transplanted into nude mice.
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February 2014 in “Asian Pacific journal of tropical medicine” Wnt5a may slow down hair growth in mice.