November 2025 in “Veterinary and Animal Science” This study found that both dark and white dromedary camels exhibited high medullation in hair fibers, suggesting adaptations for insulation and heat dissipation in hot desert environments.
2 citations
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October 2021 in “bioRxiv (Cold Spring Harbor Laboratory)” This study reported the first paleogenomic data from Korea, revealing genetic diversity in ancient Koreans from the Gimhae region, with evidence of admixture between northern-Chinese Iron Age populations and Japanese-Jomon-related ancestry.
42 citations
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January 2011 in “Journal of Biomedical Optics” This study demonstrates that spatially resolved IR and Raman imaging can effectively reveal the molecular structure and composition of untreated human hair, providing insights into its chemistry and structural integrity.
May 2024 in “Ultramicroscopy” Atomic Force Microscopy is a more accurate way to assess hair damage and the effect of cosmetic treatments.
45 citations
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December 2006 in “Biopolymers” This study found that permanent waving treatment induces structural changes in the cortex proteins of white human hair, significantly reducing its tensile strength without altering the S-S band intensity.
19 citations
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May 2008 in “Applied spectroscopy” This study found that human hair cuticle and cortex have different protein structures, with beta-sheet and disorder configurations in the cuticle and alpha-helical structures in the cortex.
8 citations
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March 2007 in “The journal of investigative dermatology/Journal of investigative dermatology” This study reports that the near-naked hairless mutation in mice is not an allele of the Hairless gene but may involve a mutation in a linked gene or a regulatory mutation.
This study found that the NuMA protein's microtubule-binding domain is essential for proper spindle orientation and differentiation in keratinocytes, affecting skin and hair development in mice.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” In this study, researchers found that the loss of SETDB1 in epidermal keratinocytes led to altered chromatin states, increased ERV expression, and activation of immune responses, while inhibiting these effects with certain antiviral drugs reduced skin inflammation and hair loss in a mouse model.
September 2025 in “International Journal of Cosmetic Science” This study observed that exposing human hair keratins to heat or UV treatments led to modifications in cysteine residues, disrupting crucial disulphide bonds and potentially reducing the structural integrity of hair similar to prolonged styling or sunlight exposure.
This study identified genetic regions evolving at different rates in hairless mammals, suggesting that specific genomic changes may contribute to the evolution of hairlessness across various species.
September 1984 in “Journal of Biological Education” Human hair growth involves active, resting, and intermediate phases, and examining plucked hairs can teach students about hair biology and diseases.
2 citations
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March 2021 in “bioRxiv (Cold Spring Harbor Laboratory)” In this study, researchers used an evolutionary-rate-based method to identify genetic elements associated with reduced hair in mammals, finding a dichotomy between accelerated coding sequences and noncoding regulatory elements influencing hair growth.
This study suggests that specific genetic changes, including mutations in protein-coding genes and noncoding regions, have contributed to the evolution of hairlessness in multiple mammalian species.
8 citations
,
March 2009 in “Differentiation” The study demonstrated that bulge stem cells from rat vibrissa follicles respond to adult dermal papilla signals, inducing hair bulb formation and regenerating hair structures in vivo.
5 citations
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November 2015 in “International Journal of Radiation Biology” This study suggests that gamma-ray irradiation affects hair follicle density, structure, and pigmentation in mice, with some changes observed in later hair cycles.
24 citations
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November 2015 in “Scientific reports” This study discovered a new region in the hair cortex where intermediate filaments are both aligned with the hair's axis and orientationally ordered, influenced by the cuticle boundary.
April 2024 in “bioRxiv (Cold Spring Harbor Laboratory)” In a keratinocyte-specific knockout mouse model, this study found that deleting GRK2 disrupted hair follicle homeostasis, causing cyst-like structures, abnormal growth patterns, and eventual hair loss, suggesting potential links to immune-mediated alopecias.
February 2024 in “bioRxiv (Cold Spring Harbor Laboratory)” This study found that certain tandem repeats predict darker hair color across diverse ancestry groups and can contribute to a polygenic score for hair color, independent of SNP variation.
21 citations
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November 2017 in “Livestock science” This study confirms the presence of large structural variations in the genome of Nellore cattle, which may contribute to their environmental adaptation to tropical regions.
This study demonstrates that the trichohyalin gene is located at chromosomal region 1q21, where several other genes related to epidermal differentiation also map.
3 citations
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March 2025 in “Science Advances” This study found that the unique crest feather formation in Polish chickens is driven by a 195-bp duplication in the HoxC10 gene region, which alters gene expression by modifying the genomic structure, suggesting a mechanism for diverse integumentary appendages in birds.
2 citations
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September 2020 in “Pakistan Journal of Zoology” This study observed that red sindhi cattle have variations in skin structure between age and sex groups, with more developed skin appendages in adults and a higher density of sweat glands in younger cattle.
1 citations
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August 2024 in “Animals” This study suggests that variations in α-keratin proteins influence the structure and characteristics of wool fibers, indicating that keratin genes could serve as useful markers for identifying different wool traits.
July 2023 in “Turkish journal of veterinary research” This study investigated the hair structure of wild pigs in the Balıkesir region using stereomicroscopy and scanning electron microscopy, finding distinct bifurcation patterns, but concluded that pig bristles used in brushes likely wouldn't retain these features, complicating species identification.
119 citations
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January 2000 in “British Journal of Dermatology” This study found that keratin expression patterns vary within nail unit structures, with the nail matrix uniquely expressing the acidic hair-type keratin Ha1.
January 2014 in “Journal of the Korean Society of Design Culture” This study found that in female patients with telogen effluvium, club hair in the isthmus region was longer than in those with alopecia areata, offering insights into hair morphology differences.
52 citations
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March 2015 in “Tissue Engineering Part C Methods” This study presented 3D images of human dermis, revealing fewer elastic fibers near hair follicles compared to other regions, which may aid future skin engineering efforts.
May 2023 in “Zenodo (CERN European Organization for Nuclear Research)” This study found that anemic pregnant women in Casablanca-Settat and Marrakech-Safi regions had more exposure to risk factors like younger age and coffee consumption, while antenatal care reduced anemia risk.
36 citations
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September 2013 in “PLoS ONE” This study found that sweat gland stem cells primarily maintain sweat gland homeostasis but can trans-differentiate to aid in epidermal healing and regenerate diverse skin structures under certain conditions.