February 2023 in “Mağallaẗ Tikrīt li-l-ʻulūm al-ṣirfaẗ/Tikrit journal of pure science” Horse skin has a layered epidermis, a dermis with hair follicles, sweat and sebaceous glands, and is supplied by small arteries.
January 2015 in “Chinese Veterinary Science” Recognizing ultrastructures of cashmere goat hair follicles helps identify and locate follicle layers.
August 2013 in “日本医療薬学会年会講演要旨集” Hair contains complex lipids, including cholesterol and fatty acids, similar to skin.
January 2012 in “eScholarship (California Digital Library)” Hair and nails contain stable RNA, useful for personalized medicine and screening.
May 2005 in “Zhonghua chuangshang guke zazhi” Human hair keratin can help nerve regeneration and is a promising material for nerve repair.
January 1995 in “Skin Cancer” The outer root sheath in hair follicles changes during growth, with different keratinization processes in its layers.
46 citations
,
July 2007 in “Journal of comparative neurology” Manatee whiskers are specially adapted for touch in water.
61 citations
,
February 1982 in “Cell and Tissue Research”
May 2025 in “Journal of Developmental Biology” Jawless vertebrates have teeth proteins similar to those in mammalian hair and nails.
46 citations
,
August 1977 in “Journal of Morphology” The big-clawed shrew's sinus hair follicles are highly specialized for sensing vibrations.
3 citations
,
January 2012 in “Elsevier eBooks” The document says that there are treatments for hair and nail diseases.
17 citations
,
June 2012 in “Journal of experimental zoology. Part B, Molecular and developmental evolution” Hair in mammals likely evolved from glandular structures, not scales.
42 citations
,
January 2014 in “BMC Genomics” Cetaceans lost hair genes to adapt to water.
15 citations
,
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.
82 citations
,
January 2006 in “International review of cytology” Vertebrate skin evolved to be more specialized and complex, especially in land animals.
86 citations
,
April 2009 in “Journal of anatomy” Hard skin features like scales, feathers, and hair evolved through specific protein changes in different animal groups.
90 citations
,
July 1993 in “Journal of Investigative Dermatology”
July 2023 in “Turkish journal of veterinary research” Wild boar bristles in Balıkesir vary in length and thickness but are unsuitable for species separation.
6 citations
,
August 1937 in “Journal of the Society of Chemical Industry” 72 citations
,
December 2018 in “Journal of Experimental Zoology Part B Molecular and Developmental Evolution” Corneous beta-proteins evolved uniquely in reptiles and birds, forming scales, claws, beaks, and feathers.
106 citations
,
March 2014 in “BioEssays” We need more research to better understand human hair follicle stem cells for improved treatments for hair loss and skin cancer.
55 citations
,
December 2014 in “Dermatologica sinica/Zhōnghuá pífūkē yīxué zázhì” Keratinocytes control how melanocytes work.
50 citations
,
September 2011 in “Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids” Maintaining the right amount of retinoic acid is crucial for healthy hair and skin.
28 citations
,
November 2018 in “Journal of structural biology” Different populations have distinct hair structures related to their ancestry.
28 citations
,
January 2007 in “Dermatology” Chemotherapy can cause rapid, extensive hair loss, with patterns varying between individuals.
3 citations
,
July 2011 in “Folia Histochemica et Cytobiologica” Calcium reduces involucrin in rat hair bulbs but doesn't affect filaggrin and Kdap.
2 citations
,
February 2016 in “Journal of sol-gel science and technology” A small molecule can strengthen fine hair, making it more resistant and natural-feeling.
September 2024 in “Journal of Parasite Science” Dermatophytosis in cats was most common in young, male Persian cats, with symptoms like hair loss and crusts.
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.
April 2019 in “The journal of investigative dermatology/Journal of investigative dermatology” DHT may reduce inflammation caused by certain bacteria in skin cells.