19 citations,
July 1964 in “PubMed” Hair follicle cells become four types: medulla, cortex, cuticle, and inner root sheath.
15 citations,
February 1999 in “The anatomical record” Some mutant mice have hair with abnormal cross-linking, mainly in the cuticle, not affecting other hair parts.
January 1963 in “Stain technology” Ziehl-Neelsen's stain helps identify different parts of hair in sheep and goats.
3 citations,
October 2006 in “Journal of dermatology” X-ray microscopy can non-invasively show hair structure changes after treatments, but it's less detailed than TEM and needs improvement.
1 citations,
April 2018 in “PubMed” The medulla in Asian scalp hair has a tubular structure that allows ions and large molecules to flow through it.
3 citations,
April 2015 in “Current problems in dermatology” A more sensitive assay was developed to detect enzyme activity converting arginine to citrulline in hair follicles.
42 citations,
January 2011 in “Journal of Biomedical Optics” Infrared and Raman imaging can non-destructively analyze hair structure and help diagnose hair conditions.
16 citations,
October 1992 in “Journal of cutaneous pathology” Bubble hair deformity may be caused by hair shaft trauma and can improve with gentle hair care.
18 citations,
August 2014 in “Lipids” Human hair has more unsaturated fats inside than on the surface, and certain lipids may help bind the outer and inner layers together.
Otter rabbit, mink, and blue fox fur can be identified by their unique hair structures.
1 citations,
January 2007 in “AIP conference proceedings” High-resolution x-ray images showed three main structures in human hair: medulla, cortex, and cuticle.
8 citations,
February 2022 in “International Journal of Dermatology” Lipids are crucial for healthy hair, protecting it from damage and breakage.
7 citations,
December 2011 in “Annals of anatomy” Involucrin helps strengthen the inner parts of human hair.
October 2024 in “BMC Genomics” Understanding hair follicle development can help improve cashmere quality.
25 citations,
December 1973 in “Biochemical Journal” Guinea-pig hair and follicle proteins are mostly similar, but follicles have more group 2 proteins and fewer group 3 and 4 proteins.
65 citations,
July 2006 in “Journal of biological chemistry/The Journal of biological chemistry” The gene Foxq1, controlled by Hoxc13, is crucial for hair follicle differentiation.
11 citations,
January 2012 in “Journal of cell science” Rac1 is essential for proper hair structure and color.
2 citations,
May 2012 in “Acta pharmaceutica sinica B” The study found unique microscopic features for hair or feather in five animal ingredients in Shenrongbian pill.
1 citations,
September 2018 in “International journal of research - granthaalayah” Human hair medulla doesn't break down hydrogen peroxide, which may affect hair color formation.
April 2023 in “Journal of Investigative Dermatology” Hair growth is driven by cells that move and change like a conveyor belt.
21 citations,
November 2010 in “Journal of molecular medicine” FoxN1 gene is essential for proper thymus structure and preventing hair loss.
68 citations,
May 1991 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism” Both cyproterone acetate and spironolactone effectively reduce hair growth in women with hirsutism.
39 citations,
February 1990 in “The journal of cell biology/The Journal of cell biology” Trichohyalin, a hair follicle protein, has a part with repeating patterns of 23 amino acids.
20 citations,
July 2005 in “Experimental dermatology” The fuzzy gene is crucial for controlling hair growth cycles.
87 citations,
July 2009 in “The journal of investigative dermatology/Journal of investigative dermatology” Human beard hair medulla contains a unique and complex mix of keratins not found in other human tissues.
17 citations,
July 2014 in “Journal of Ultrasound in Medicine” Abnormal cuticle and hair shaft medulla cause hair loss in androgenetic alopecia; sonography helps diagnose and manage it.
3 citations,
July 2019 in “Fibers And Polymers/Fibers and polymers” 135 citations,
October 1997 in “Journal of biological chemistry/The Journal of biological chemistry” Trichohyalin is modified by enzymes to form strong structures in hair cells.
April 2010 in “The journal of immunology/The Journal of immunology” FoxN1 gene is crucial for proper thymus structure and normal skin appearance.
2 citations,
September 1997 in “Journal of The European Academy of Dermatology and Venereology” Topical spironolactone effectively treats hair loss in women.