December 2025 in “Nature Communications” Club-like receptors detect light touch but not whisking.
The man likely has a condition causing eyelash loss and scaling on his eyelid.
December 2016 in “Experimental and Molecular Pathology” Mus pahari mice have fragile skin due to abnormal collagen and elastin.
77 citations
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June 2007 in “PLoS ONE” Birds can regenerate inner ear cells using specific gene pathways, unlike mammals.
October 2025 in “HAL (Le Centre pour la Communication Scientifique Directe)” Variegated coat color in cats is linked to the Silver locus.
2 citations
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August 2021 in “bioRxiv (Cold Spring Harbor Laboratory)” Hoxd gene regulation in mammals and birds is robust despite differences in DNA sequences, due to 3D chromatin structures.
Polarized microscopy helps identify hair irregularities in genetic disorders.
2 citations
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October 1931 in “Archives of Dermatology and Syphilology” A rare scalp infection in a child developed into a kerion with additional skin symptoms.
6 citations
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July 2021 in “The anatomical record” Different whale and dolphin species have unique whisker follicle structures, suggesting they might use their whiskers in various ways.
6 citations
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January 2021 in “Journal of the mechanics and physics of solids/Journal of the Mechanics and Physics of Solids” The model shows that factors like follicle shape and stiffness are key for hair growth and anchoring.
2 citations
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February 2023 in “International journal of molecular sciences” Body hairs can be used in forensic science and toxicology like scalp hair.
January 2023 in “International journal of biological sciences” COX2 and ATP synthase control the size of hedgehog spines.
October 2024 in “Skin Appendage Disorders” Some people grow more hair on one side of their scalp, possibly due to genetics, behavior, or environment.
112 citations
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February 2001 in “Journal of Investigative Dermatology” Neuropeptides affect hair growth, with some speeding it up and others slowing it down.
August 2025 in “JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS” Alopecia in bats is more common in urban areas due to habitat conditions.
68 citations
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April 2014 in “Journal of Investigative Dermatology” Trichohyalin-like proteins are essential for the development of skin structures like hair, nails, and feathers.
68 citations
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April 1965 in “General and Comparative Endocrinology” The pituitary gland controls seasonal fur color changes in weasels.
106 citations
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February 2014 in “eLife” Lanceolate complexes in mouse hair follicles are essential for touch and depend on specific cells for maintenance and regeneration.
February 2025 in “Proceedings of the National Academy of Sciences” Only Deomyinae rodents can regenerate complex tissues.
June 2024 in “Archives of Dermatological Research” SFRP2 and PTGDS may be key factors in female hair loss.
17 citations
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June 1990 in “PubMed” Hair varies in size and features depending on body region.
January 1992 in “Proceedings of the New Zealand Society of Animal Production” Ferret hair growth starts between 0 and 4 days after melatonin treatment, with cell growth peaking in the hair germ and declining as the hair matures.
25 citations
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January 2014 in “Annals of Dermatology” Sfrp2 increases during hair follicle catagen phase and slows keratinocyte growth.
1 citations
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November 2014 in “Journal of Biomedical Optics” Reflectance spectroscopy can noninvasively track hair growth stages by measuring skin reflectance and melanin changes.
92 citations
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April 2009 in “Journal of Investigative Dermatology” The Celsr1 gene is crucial for normal hair patterning in mice.
November 2022 in “The journal of investigative dermatology/Journal of investigative dermatology” The STRIPAK complex is crucial for skin cell organization and creating a functional skin barrier.
28 citations
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January 2015 in “Journal of Cell Science” PINCH-1 is crucial for skin cell adhesion and movement, working with EPLIN and ILK.
January 2023 in “Burns & Trauma” The study concluded that the new wound model can be used to evaluate skin regeneration and nerve growth.
2 citations
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March 1977 in “Journal of animal science/Journal of animal science ... and ASAS reference compendium” Defective mink guard hairs have split tips and missing cuticle cells, causing a metallic sheen.
6 citations
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April 1985 in “Australasian journal of dermatology” The cause of the syndrome with scalp scaling and hair loss is unknown.