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February 1991 Cuticle damage doesn't affect hair's tensile strength; the cortex is responsible for it.
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June 2000 in “Development” Notch pathway activation causes abnormal hair layer development.
October 2023 in “Journal of the Endocrine Society” A rare case of Cushing syndrome was successfully treated with one-sided adrenal gland removal, suggesting personalized treatment is important.
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January 2021 in “Frontiers in veterinary science” Pigs in farrowing crates and loose-housing systems showed no difference in chronic stress levels as measured by hair cortisol.
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September 2006 in “Journal of Neurophysiology” Neurosteroids help balance brain signals when certain inhibitions are reduced.
The PI's development is closely linked to skin and hair pigmentation in macaques.
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May 2003 in “The Laryngoscope” FGF-1 causes spiral ganglion neurites to branch more.
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April 1990 in “Journal of comparative neurology” The study found that nerve signals are stronger when there are more connection points, but not necessarily denser, along the nerve's path in the spine.
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January 2014 in “Journal of Visualized Experiments” Hair cortisol analysis effectively measures long-term stress.
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March 2003 in “International Journal of Dermatology” Pimozide treatment resolved cysts and partially restored cheek fat in a man with Barraquer–Simons syndrome.
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December 2021 in “Proteins” Wool fiber curliness is linked to the presence of certain proteins and K38.
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December 1986 in “The journal of cell biology/The Journal of cell biology” Hair and nail cells share similar proteins, indicating a common differentiation pathway.
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January 1981 in “PubMed” Hair medullary cells in mammals vary in complexity, with humans having more structured cells similar to inner root sheath cells.
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May 2008 in “Applied spectroscopy” Human hair has different protein structures in its cuticle and cortex.
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January 2002 in “Biological chemistry” Different conditions affect how hair proteins assemble, and certain mutations can change their structure.
September 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” The mTurq2-Col4a1 mouse model shows that cells can divide while attached to stable basement membranes during development.
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December 1997 in “Archives of Dermatological Research” Rat dermal papilla cells have unique properties and interact differently with their environment compared to other skin cells.
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December 2011 in “Arzneimittelforschung” CB-03-04 shows promise as a treatment for prostate issues due to its strong anti-androgen effects.
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May 2008 in “Applied surface science” Mummy hair from the Taklamakan desert has calcium and phosphorus inside.
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March 2008 in “Neuroscience Research” Cat paws have complex touch sensors for detailed sensory processing.
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January 2021 in “Dermatology Review” A young man developed a rare, bilateral scalp condition after head trauma, causing hair loss but no neurological or eye issues.
October 2024 in “Journal of Cutaneous Pathology” Compound follicles in folliculitis decalvans mainly have active hair follicles.
May 2026 in “The Knowledge Bank (The Ohio State University)” Mare and foal hair cortisol levels are strongly linked, indicating potential for assessing fetal health and stress.
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June 2005 in “British Journal of Dermatology” Calretinin identifies the companion cell layer in human hair follicles.
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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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May 1969 in “American Journal of Physical Anthropology” The silver marmoset's skin is thin, lacks pigment cells, and has unique features like keratinized spines and specialized glands.
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May 2011 in “Journal of Neuroendocrinology” PEA boosts allopregnanolone production and reduces oxidative stress in brain cells.
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February 2016 in “Anatomical Science International” Hair proteins change location and structure as hair cells mature.