151 citations
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February 2006 in “Stem Cells and Development” Hair follicles can be a good source of stem cells like those from bone marrow.
28 citations
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April 1988 in “Archives of Dermatological Research” 2 citations
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September 1996 in “Neuroscience letters” Adding fetal calf serum to the medium kept Merkel cells alive and changed their shape.
1 citations
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September 2024 in “iScience” Disrupted sleep patterns from artificial light can slow hair growth and may lead to hair loss.
81 citations
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September 2009 in “Birth defects research” Different body areas in mice produce different hair types due to interactions between skin layers.
20 citations
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September 2004 in “Journal of Anatomy” The inner root sheath evolved to help hair grow safely through the skin in mammals.
Dark hair with a red beard likely evolved for camouflage, not attraction.
4 citations
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January 2000 in “Durham e-Theses (Durham University)” Hair follicles help wounds heal faster, especially in active growth phase skin.
59 citations
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November 2011 in “Development” Trps1 is essential for proper hair follicle development.
95 citations
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January 2009 in “Journal of Biomedical Optics” Nanoparticles penetrate hair follicles better when their size matches the cuticula thickness.
Curly wool has more orthocortex than straight wool.
53 citations
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July 2002 in “Journal of Investigative Dermatology” The Dfl mutation in mice causes poor sebaceous gland function and complete hair loss.
2 citations
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June 2021 in “Research Square (Research Square)” A new gene mutation causes long hair in some Maine Coon cats.
3 citations
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January 2019 in “Bulgarian Journal of Veterinary Medicine” The cat was put to sleep due to recurring infections.
13 citations
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March 2020 in “Genes” Disrupting the FGF5 gene in rabbits leads to longer hair by extending the hair growth phase.
March 2013 in “Pigment Cell & Melanoma Research” A gene called Taqpep affects cat coat patterns like stripes and blotches.
28 citations
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August 1992 in “Differentiation” A new pair of mouse keratins, 65 kD and 48 kD, are found in specific skin areas and are linked to a unique skin differentiation type.
July 2025 in “Journal of Investigative Dermatology” Secreted inhibitors of Wnt and IGF signaling control hair and tooth development, creating species-specific patterns.
December 2018 in “DergiPark (Istanbul University)” The cat's skin condition improved with treatment, but underlying health issues must be addressed.
January 2014 in “Redalyc (Universidad Autónoma del Estado de México)” A Persian cat had a rare skin condition that didn't improve with treatment.
8 citations
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March 2009 in “Differentiation” Adult vibrissa follicle stem cells can regenerate hair follicles, glands, and skin.
12 citations
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October 2014 in “Journal of Applied Animal Research” Bakerwali goat skin thickens with age, especially on the neck, and shows strong lipid reactions in the keratin layer.
28 citations
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September 2013 in “Biogerontology”
July 2023 in “Research journal of pharmacy and technology” The hair tonic with Capsicum frutescens extract helps hair grow in male rabbits.
December 2025 in “International Journal For Multidisciplinary Research” Muridae species have unique hair patterns specific to each genus and species.
1 citations
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October 1978 in “The Journal of Pediatrics”
May 2024 in “Scientific reports” Twist2 is essential for scarless skin healing and hair growth in mouse fetuses.
4 citations
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May 1998 in “PubMed” The Bsk mutation doesn't involve keratin gene recombination and its cause is unknown.
February 2025 in “Veterinary Clinical Pathology” The ferret had a malignant apocrine gland tumor and did not survive surgery.
191 citations
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November 1959 in “Annals of the New York Academy of Sciences” Hair and wool have complex microscopic structures with microfibrils and varying cystine content.