Hairless mammals evolved quickly in both gene and non-gene areas related to skin and hair.
101 citations
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August 2001 in “The Journal of Cell Biology” A new keratin 6 type in mice explains why some mice without certain keratin genes still have normal hair and nails.
23 citations
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January 1981 Hair is mostly made of three protein types: helical, high-sulfur, and high-tyrosine.
7 citations
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July 2019 in “International Journal of Molecular Sciences” PGA-4HGF may help treat hair loss by activating hair growth pathways and extending the hair growth phase.
1 citations
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July 2022 in “bioRxiv (Cold Spring Harbor Laboratory)” Keratin gene expression helps understand different types of skin cells and their development, and should be used carefully as biological markers.
December 2025 in “American Journal of Dermatopathology” Keratin 19 may help diagnose and treat certain types of permanent hair loss.
A 5 cm hair sample can reveal blood type and keratin type for forensic use.
33 citations
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March 2006 in “Seminars in cutaneous medicine and surgery” The document explains how to identify different hair problems using a microscope.
7 citations
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April 2000 in “Mammalian Genome” A new mutation in mice causes crooked whiskers and messy hair.
35 citations
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May 2006 in “Journal of Investigative Dermatology” Monilethrix involves multiple genes affecting hair structure, including DSG4 mutations.
9 citations
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February 2001 in “Journal of Dermatological Science” p21waf1/cip1 and p27kip1 help in hair follicle differentiation in rats.
4 citations
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January 2014 in “Indian dermatology online journal” Monilethrix is a genetic hair disorder causing fragile, beaded hair with no effective treatment.
January 2026 in “Cosmoderma” A 9-year-old girl has a rare hair disorder causing beaded, sparse hair.
73 citations
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January 2004 in “Journal of the American Academy of Dermatology” Immunocompromised patients can develop skin and hair issues due to a virus.
27 citations
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April 2018 in “Scientific Reports” Psoriasis patients' immune response to a hair protein depends on their specific gene type.
85 citations
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September 2013 in “International Journal of Molecular Sciences” Keratin 15 is not a reliable sole marker for identifying epidermal stem cells because it's found in various cell types.
January 2005 in “Journal of Cutaneous Pathology” A unique type of complex cyst was found on a man's scrotum.
5 citations
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October 2020 in “Experimental dermatology” A specific type of skin cell creates an opening for hair to grow out, and problems with this process can lead to skin conditions.
January 2008 in “Chinese Journal of Aesthetic and Plastic Surgery” Type B material, ground for 8 hours, is the most suitable and compatible for use as a soft tissue filler.
41 citations
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January 2014 in “Annals of Dermatology” Dermoscopic examination helps diagnose different types of hair loss conditions by showing specific patterns.
5 citations
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January 2022 in “Scientific reports” The research identified two types of keratinocytes in chicken scales: one for hard scales and another for soft skin, with similarities to human skin differentiation.
4 citations
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May 2012 in “Tissue Engineering and Regenerative Medicine” Scientists created three types of structures to help regrow hair follicles, and all showed promising results for hair regeneration.
1 citations
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January 2015 in “Indian Journal of Veterinary Pathology” Two dogs had different types of hair follicle tumors.
6 citations
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October 2009 in “Veterinary Dermatology” Canine claws have complex structures with different keratin types, similar to hair and nails.
53 citations
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September 1999 in “The journal of cell biology/The Journal of cell biology” K16 can partially replace K14 but causes hair loss and skin issues.
26 citations
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July 2012 in “Biochimica et Biophysica Acta (BBA) - General Subjects” The review found that different stem cell types in the skin are crucial for repair and could help treat skin diseases and cancer.
11 citations
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January 1987 in “Electrophoresis” Keratin proteins are consistent across different hair types from the same person.
6 citations
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August 2008 in “Journal of Forensic Sciences” Recognizing specific tissue types on telogen hair roots can improve DNA typing.
June 2022 in “Research Square (Research Square)” Nestin-expressing cells turn into a specific type of skin cell in hair follicles during development and in adults.
May 2022 in “Research Square (Research Square)” Nestin marks cells that can become a specific type of skin cell in hair follicles of both developing and adult mice.