7 citations
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January 2001 in “Comprehensive series in photosciences” UV radiation significantly damages hair, especially with humidity, making it more vulnerable to further damage.
17 citations
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June 2012 in “Journal of experimental zoology. Part B, Molecular and developmental evolution” Hair in mammals likely evolved from glandular structures, not scales.
31 citations
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December 2010 in “Journal of the American Academy of Dermatology” Loose anagen hair syndrome is caused by structural abnormalities in the hair follicle's inner root sheath.
15 citations
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July 2004 in “Journal of morphology” Monotreme hair structure and protein distribution are similar to other mammals, but their inner root sheath cornifies differently, suggesting a unique evolution from reptile skin.
4 citations
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November 1968 in “Textile research journal” Hair fibers may have a unique, non-protein sheath not previously identified.
40 citations
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November 1998 in “The journal of investigative dermatology/Journal of investigative dermatology” S100A3 protein is crucial for hair shaft formation in mice.
139 citations
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December 1998 in “The journal of investigative dermatology/Journal of investigative dermatology” K6hf is a unique protein found only in a specific layer of hair follicles.
135 citations
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November 1987 in “Differentiation” Outer root sheath cells consistently express certain keratins influenced by their environment.
27 citations
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January 2010 in “Animal” South American camelids should be sheared early, fleece type affects fiber quality, and the S/P follicle ratio doesn't distinguish between Bolivian llama genotypes.
25 citations
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October 1996 in “Dermatologic Clinics” Loose Anagen Syndrome causes easy-to-pull, thin hair, mainly in young girls, and improves with age.
24 citations
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November 2007 in “Journal of Investigative Dermatology Symposium Proceedings” Hair and scalp disorders significantly affect self-esteem, and using cosmetic products like conditioners and styling aids can improve hair health and appearance.
11 citations
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March 2001 in “Clinics in Dermatology” Hair microscopy is useful for diagnosing hair disorders, but clear definitions are needed for accurate genetic analysis.
10 citations
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May 2020 in “Journal of proteome research” Explosions don't stop hair proteins from being used to identify people.
146 citations
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May 2002 in “The American journal of pathology” Cathepsin L is essential for normal hair growth and development.
46 citations
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January 1996 in “Journal of The American Academy of Dermatology” People with late-stage HIV-1 often experience a specific type of hair loss linked to multiple factors, including nutritional issues and immune responses.
40 citations
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March 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” Growing hair follicles have high mitochondrial activity and ROS in specific regions, aiding hair formation.
5 citations
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March 2001 in “Journal of biomechanics” Growing hairs are easier to pull out than resting hairs due to different anchorage strengths.
70 citations
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December 2004 in “Differentiation” The study identified and characterized new keratin genes linked to hair follicles and epithelial tissues.
The document concludes that Loose Anagen Hair Syndrome is a benign condition where hair is thin and easily pulled out, often improving with age.
January 2002 in “Proceedings of The Japanese Society of Animal Models for Human Diseases” Keratin2-6g is crucial for hair follicle development, with mutations causing cell degeneration and vacuolation.
March 2026 in “Journal of the mechanical behavior of biomedical materials/Journal of mechanical behavior of biomedical materials” Hair cuticles remain stable and resilient under stress due to strong protein content and crosslinking.
January 2006 in “DOAJ (DOAJ: Directory of Open Access Journals)” Loose anagen hair syndrome causes easily pulled, thin hair in kids but is harmless and temporary.
9 citations
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July 2014 in “PubMed” Different S100 proteins have specific roles in various parts of the hair follicle.
KRTAP6 genes affect wool quality in sheep.
62 citations
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December 2007 in “Journal of biological chemistry/The Journal of biological chemistry” A specific chemical change in the S100A3 protein leads to the formation of a four-part structure important for hair formation.
79 citations
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October 1998 in “Genomics” Mouse keratin 6 genes evolved independently from human ones and are regulated differently.
48 citations
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February 2010 in “Molecular biology reports” KAP7.1 and KAP8.2 genes are crucial for cashmere quality in goats.
14 citations
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December 2016 in “PloS one” Keratin 26 affects cashmere goat hair growth and is influenced by various treatments.
4 citations
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July 2022 in “Annals of translational medicine” Scientists created complete hair-like structures by growing mouse skin cells together in a special gel.
November 2025 in “Scientific Reports” COVID-19 may cause hair loss by affecting hair follicles.