Hair germ cells differ from epidermal cells in keratin expression, and specific keratins form after hair differentiation.
January 2023 in “Karger Kompass. Dermatologie” Scientists are still unsure what triggers the immune system to attack hair follicles in Alopecia areata.
151 citations
,
August 2011 in “The EMBO Journal” The enzyme PA-PLA1α is important for proper hair follicle development.
124 citations
,
November 2000 in “The journal of investigative dermatology/Journal of investigative dermatology” PAD3 plays a key role in hair and skin protein structure and may be linked to skin diseases.
97 citations
,
March 2010 in “The American Journal of Human Genetics” A mutation in the KRT74 gene causes tightly curled hair.
70 citations
,
February 2007 in “Journal of Investigative Dermatology” K39 and K40 are the last keratins expressed in hair development, completing the hair keratin catalog.
42 citations
,
September 2003 in “Journal of Investigative Dermatology” A missing mK6irs1 gene causes hair loss in mice.
28 citations
,
August 2005 in “Journal of Investigative Dermatology” TG5 helps maintain hair follicle health, while TG3 aids in hair shaft development.
4 citations
,
July 2022 in “Annals of translational medicine” Scientists created complete hair-like structures by growing mouse skin cells together in a special gel.
15 citations
,
August 2020 in “Analytical chemistry” Hair lipids do not protect against humidity.
February 1999 in “The anatomical record” Two mouse mutants have defective hair cuticle cross-linking.
10 citations
,
November 2016 in “International Journal of Cosmetic Science” A tough membrane between the outer and inner layers of human hair protects it from damage.
March 2026 in “International Journal of Advanced Biochemistry Research” German shepherd hair varies in color and pattern but is flat with a consistent internal structure.
January 1994 in “Nihon Chikusan Gakkaiho” Collagen fibrils in mink skin change structure during hair growth, becoming looser and thicker in the active phase.
288 citations
,
June 2009 in “Human reproduction update” The modified Ferriman-Gallwey method is a useful tool for diagnosing hirsutism.
15 citations
,
January 1988 Hair follicles have unique proteins that vary by species and are influenced by nutrition.
December 2025 in “International Journal of Advanced Biochemistry Research” Malvi cattle hair varies in color and pattern across different body regions.
46 citations
,
November 1998 in “Experimental Cell Research” K15 gene is mainly active in the basal layers of hair follicles and epithelia, aiding early skin cell development.
42 citations
,
June 1998 in “The journal of investigative dermatology/Journal of investigative dermatology” PAI-2 helps in the maturation and protection of hair and nail cells.
27 citations
,
May 2019 in “Cosmetics” The hair cuticle is made of tough proteins that protect the hair, but more research is needed to fully understand its structure.
22 citations
,
September 2001 in “Journal of Investigative Dermatology” S100A8 and S100A9 proteins help form hair shafts during growth.
16 citations
,
September 2006 in “The Journal of Immunology” MILL molecules are unique immune proteins in mice that don't need TAP to appear on cell surfaces.
January 2017 in “Elsevier eBooks” Sex hormones affect reproduction, sexual development, and oral health, and it's important for dental practitioners to understand their effects and interactions.
18 citations
,
August 2012 in “Journal of The American Academy of Dermatology” Estrogen therapy helped regrow hair in a bald man.
48 citations
,
May 1991 in “The journal of investigative dermatology/Journal of investigative dermatology” Trichohyalin is also found in the outer layers of normal human skin.
March 2024 in “World Journal Of Advanced Research and Reviews” Herbal hair oil helps improve hair health and prevent hair problems.
October 2023 in “Research Review” Some skin tumors from hair follicles and glands can be linked to genetic syndromes and may be benign or malignant.
January 2012 in “Journal of the Dermatology Nurses’ Association” The document explains hair growth, hair loss types, and other hair-related terms.
90 citations
,
January 1979 in “International review of cytology” Wool follicles are complex, involving interactions between different cell types and structures.
48 citations
,
July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair growth is controlled by specific gene clusters and proteins, and cysteine affects hair gene expression in sheep.