April 2017 in “Journal of Investigative Dermatology” The hair follicle dermal sheath is essential for hair shedding and needs to communicate with the outer root sheath for normal hair growth cycles.
24 citations
,
June 2003 in “Journal of Structural Biology” Sheet formation is key to macrofibril structure differences in wool.
46 citations
,
January 1991 in “Tissue and Cell” The male silkmoth's antenna develops olfactory structures over 21 days, with full hair formation by day 15.
Pangolin scales evolved for protection, hardening with age, due to keratin gene diversification.
Cellular flows and tissue mechanics guide feather follicle formation in birds.
1 citations
,
July 2023 in “Journal of developmental biology” Bird foot scales develop differently and can repair but not fully regenerate due to the lack of specialized stem cell areas.
22 citations
,
December 2016 in “PloS one” A specific protein in chicken embryos links early skin layers to feather development.
25 citations
,
November 2020 in “Proceedings of the National Academy of Sciences” HoxC genes are crucial for normal hair and nail development.
6 citations
,
November 1984 in “Acta Dermato Venereologica” Hair follicles and sweat glands show different keratin staining patterns.
September 1973 in “Primates” Pseudopelade is likely an independent disease due to its distinct features.
2 citations
,
June 2001 in “Medical Electron Microscopy” Trichilemmal cysts may form from hair follicle outer root sheath growth.
April 2021 in “The journal of investigative dermatology/Journal of investigative dermatology” CTCF protein is essential for skin and hair follicle development in mice.
48 citations
,
July 1993 in “Archives of Dermatological Research” Merkel cells are abundant in facial vellus hair follicles, especially during the anagen phase.
9 citations
,
February 2016 in “Anatomical Science International” Hair proteins change location and structure as hair cells mature.
7 citations
,
July 2000 in “Hearing Research” Lateral interactions guide hair cell patterning in chick basilar papilla.
128 citations
,
March 1989 in “Experimental Cell Research” Hoxc13 is important for hair and tongue development by controlling hair keratin genes.
December 2004 in “Differentiation” 
15 citations
,
August 2015 in “Scanning” Corkscrew and cigarette-ash-shaped hairs in tinea capitis are caused by internal hair degradation and external resistance.
4 citations
,
November 2016 in “The Journal of Dermatology” Pili torti hair is fragile due to loose keratin filaments and weak disulfide bonds.
1 citations
,
January 2018 in “Acta dermato-venereologica” A teenager's hair with alternating white and dark bands, known as Pili annulati, is a genetic condition that is usually harmless and often considered attractive.
1 citations
,
October 2023 in “PROTOPLASMA” 7 citations
,
November 1997 in “Reproduction Fertility and Development” Epidermal growth factor disrupts hair and gland formation in bandicoots.
17 citations
,
July 1984 in “British journal of dermatology/British journal of dermatology, Supplement” The four patients have a unique type of ichthyosis affecting hair follicles.
75 citations
,
October 1999 in “Differentiation” Mouse keratin 6 isoforms have different expression patterns in various tissues.
January 2005 in “Chinese Journal of Veterinary” Hairless mice lose hair by 3-4 weeks, develop thicker, folded skin, and show pigmentation differences.
October 2024 in “Journal of Cutaneous Pathology” Compound follicles in folliculitis decalvans mainly have active hair follicles.
2 citations
,
October 2010 in “Journal of dermatological treatment” External treatments can change hair growth patterns in nude mice.
1 citations
,
August 2024 in “Transgenic Research” Activated β-catenin affects hair growth and skin thickness, and changes are reversible.