January 2025 in “Kuwait Journal of Science” In this study, researchers sequenced the KRT71 gene in 102 dromedary camels to find genetic polymorphisms linked to hair shape, identifying 17 variants but none that fully explained hair shape variations, suggesting other genes may also play a role.
32 citations
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March 2016 in “American Journal of Physical Anthropology” This study suggests that chemical methods can reveal subtle differences in scalp hair color variability across populations and emphasizes the need for enhanced understanding of hair fiber curvature.
In this review, the authors highlight a lack of understanding regarding the unique properties of Afro-textured hair, emphasizing the need for scientific collaboration to improve hair care practices and mitigate scalp issues.
95 citations
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January 2007 in “Human biology” This study proposes a new, objective method to classify human hair into eight categories based on specific shape measurements, rather than traditional ethnicity-based classifications.
28 citations
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November 2018 in “Journal of structural biology” This study found statistically significant patterns in hair morphology and ultrastructure linked to biogeographic ancestry among European, African, and East Asian populations.
15 citations
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May 2013 in “International Journal of Cosmetic Science” This study found that while ethnic hair types share a common fibrous keratin structure, variations in keratin-associated proteins and lipids may lead to different macroscopic hair characteristics.
October 2024 in “Cosmetics” This review highlights the lack of research on Afro-textured hair, emphasizing the need for better understanding of its genetic traits and molecular structure to develop more effective hair care solutions.
27 citations
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September 1988 in “PubMed” In this study, researchers used three-dimensional reconstruction to show that the shape of the hair follicle determines the hair's form, with variations observed among different racial groups.
7 citations
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October 2018 in “Journal of Craniofacial Surgery” In this study, researchers observed the patterns of hair distribution and scalp anatomy in Chinese young adult males, finding significant variations in hairline shape, hair density, and follicular unit structure.
April 2024 in “American Journal of Biological Anthropology” This study suggests moving away from using rigid racial categorizations and outdated typologies in favor of analyzing detailed trait patterns, providing a foundation for future research on human variation and hair traits in relation to population affinity.
This report details a refined hair transplantation method called direct no-shave follicular unit excision (DNS FUE), which avoids donor-site shaving and minimizes follicular trauma while yielding high patient satisfaction.
65 citations
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March 2017 in “Experimental Dermatology” This review discusses the genetic and biological factors influencing hair curliness, revealing strong links to specific protein variations, and reports no new clinical results.
44 citations
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February 2023 in “Cell” In this study, researchers found that human fingerprint ridges are formed through a modified hair follicle developmental process and spatial patterns influenced by specific signaling pathways.
8 citations
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April 2018 in “Facial Plastic Surgery” This article reviews techniques for achieving natural-appearing hair restoration results in women and reports no new research findings.
36 citations
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April 2010 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that canine bulge-derived keratinocytes are highly proliferative and can reconstitute pilosebaceous structures, indicating their potential utility in studying human stem cell biology and hair disorders.
March 2026 in “International Journal of Advanced Biochemistry Research” This study investigated the hair of German shepherd dogs, revealing variations in color, shape, and band patterns across different body regions, while all hair types shared similar anatomical structures such as continuous, vacuolated medullas and cuticular scales with smooth or rippled margins.
December 2025 in “International Journal of Advanced Biochemistry Research” In this study, researchers analyzed hair from different regions of Malvi cattle and found significant variations in color, shape, and band pattern, although the medullary index remained consistent between 0.50 and 0.60 across the samples.
18 citations
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November 2010 in “Journal of morphology” This research examined the ultrastructure of deer hair fibers and found significant variations in diameter, cuticle thickness, and intermediate filament arrangements among different fiber types.
February 2024 in “Medicina” In this study, researchers used atomic force microscopy to capture and analyze morphological changes in the surface of healthy hair, identifying features such as pitting and rod-shaped macro-fibrillar elements, which could inform future research on hair conditions and care.
February 2018 in “bioRxiv (Cold Spring Harbor Laboratory)” This study found that distinct spiny hair morphologies in rodents arose independently multiple times but did not link the Ecdysoplasin A receptor gene mutation that affects human hair to these variations.
4 citations
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November 2020 in “BMC Dermatology” This study identified 374 eQTLs in scalp hair follicles associated with genes involved in metabolic, mitotic, immune processes, and responses to steroid hormones, contributing insights into genetic variation and hair traits.
19 citations
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August 2013 in “Facial Plastic Surgery Clinics of North America” This article discusses the evolution and variation of hairlines in men and women across different ages, introducing a modeling system to standardize the anatomical description of hairlines, without reporting new experimental findings.
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.
27 citations
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April 2020 in “Molecular Biology and Evolution” This study found that ancient and modern Chinese goats share close genetic ties, originating from the Fertile Crescent, with genetic divergence influenced by China's climatic divisions.
2 citations
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March 1977 in “Journal of animal science/Journal of animal science ... and ASAS reference compendium” This study found that mink pelts with "singe" and "red hip" defects often exhibit split hair tips and altered cuticle structures, which may contribute to their undesired metallic sheen.
1 citations
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January 2025 in “The Journal of the American Board of Family Medicine” In this narrative, Dr. Angela Rodgers shares her experience at Baldie Con 2023, highlighting how attending a community-focused conference helped her understand the psychosocial impacts of chronic illness and the importance of connecting with others who share similar experiences.
47 citations
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January 2013 in “International Journal of Cosmetic Science” This review explores genetic and lifestyle factors influencing hair diversity and reports no new findings, calling attention to the potential for future discoveries in genetic and epigenetic research.
106 citations
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June 2005 in “Journal of Investigative Dermatology” This study defines classification criteria for hair follicle dystrophy using a mouse model of chemotherapy-induced alopecia, providing tools for standardized hair damage assessment.
4 citations
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July 2024 in “BMC Zoology” This study found that the structure and mineral content of dromedary camel hair, specifically the medulla patterns, medulla index, and elemental composition, change with age, revealing differences among camels aged 1 year, 3-5 years, and 8-10 years.
17 citations
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November 1967 in “American Journal of Anatomy” This study observed that the catagen phase in hairless mice displayed a slower shortening of the mutant epithelial column, resulting in longer total follicle length and abnormalities in the connective tissue sheath and glassy membrane.