September 2014 in “Springer eBooks” Aging causes hair to gray and thin, with the timing of graying varying by race, and factors like oxidative stress and genetics can lead to hair loss.
January 2011 in “Bradford Scholars (University of Bradford)” Testosterone stimulates growth in intermediate hair follicles, but this can be blocked by cyproterone acetate.
4 citations
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January 2019 in “Micron” Fetal hair follicles have melanocytes with melanosomes at different stages, which are broken down into pigment particles in keratinocytes.
91 citations
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March 1996 in “Archives of Dermatological Research” Certain cytokines and growth factors can inhibit hair growth and may affect alopecia areata.
86 citations
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May 2002 in “Journal of Investigative Dermatology” A new keratin, hK6irs1, is found in all layers of the hair follicle's inner root sheath.
39 citations
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April 1992 in “Development” Both cell and non-cell parts are important for rat whisker follicle regrowth.
2 citations
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July 2024 in “International Journal of Molecular Sciences” Csdc2 helps hair growth in cashmere goats by regulating specific genes.
1 citations
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January 2021 in “Processes” Researchers successfully grew horse skin cells that produce pigment from hair follicle samples.
Different genes and pathways are active in yak skin and hair cells, affecting hair growth and immune responses.
130 citations
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April 2003 in “Journal of Investigative Dermatology” Four specific keratins in hair follicles help understand hair structure and function.
46 citations
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October 2023 in “Science Advances” 3D bioprinting can now create skin with hair-like structures for medical use.
31 citations
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August 2000 in “Journal of Investigative Dermatology” Stem cells are key for hair follicle recovery.
25 citations
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November 2010 in “Journal of Molecular Structure” Raman micro-spectroscopy can help distinguish basal cell carcinoma from hair follicles in skin tissue.
7 citations
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November 2022 in “International Journal of Molecular Sciences” As Japanese males age, their hair darkens due to increased melanin, with males generally having darker hair than females.
5 citations
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January 2021 in “Frontiers in Cell and Developmental Biology” Inhibiting Zyxin may help treat androgenetic alopecia by promoting hair growth.
5 citations
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December 2018 in “Frontiers in Endocrinology” Differences in androgen receptor expression and tissue properties may lead to higher cryptorchidism risk in certain rats.
3 citations
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October 2024 in “Animals” Crimped wool has proteins linked to crimp formation, while straight wool has proteins linked to fiber fineness, which can improve wool quality and value.
December 2025 in “The Journal of Cell Biology” Keratin 15 helps maintain skin cell growth and repair.
43 citations
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April 2010 in “Developmental Biology” Sebaceous glands can form new hair follicles when activated, but hair follicle bulges cannot.
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.
3 citations
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October 1994 in “Medical Molecular Morphology” The lower part of rat vibrissa hair gets more blood and is well-protected for growth.
September 2014 in “Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE” OCT can effectively examine and reveal details about human hair and scalp conditions.
2 citations
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March 2018 in “The Journal of Dermatology” The "color-transition sign" helps tell apart alopecia areata incognita from telogen effluvium by looking at hair color changes.
211 citations
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April 2013 in “Development” More dermal papilla cells in hair follicles lead to larger, healthier hair, while fewer cells cause hair thinning and loss.
90 citations
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January 1979 in “International review of cytology” Wool follicles are complex, involving interactions between different cell types and structures.
33 citations
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April 2012 in “British Journal of Dermatology” Damaged hair follicle stem cells can cause permanent hair loss, but understanding their role could lead to new treatments.
25 citations
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April 2015 in “Journal of Investigative Dermatology” GasderminA3 is important for normal hair cycle transitions by controlling Wnt signaling.
19 citations
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January 2009 in “International review of cell and molecular biology” Hair's strength and flexibility come from its protein structure and molecular interactions.
17 citations
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January 2015 in “Current problems in dermatology” Understanding and treating hair disorders in different ethnic groups requires knowledge of specific hair care practices and hair characteristics.
14 citations
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September 2010 in “Annals of Plastic Surgery” Hair restoration has evolved from surgery to drugs to potential gene therapy, with improved results and ongoing research driven by high demand.