26 citations
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September 1999 in “Canadian Journal of Botany” This study found that a recessive mutation in the RHD4 gene of Arabidopsis thaliana leads to slower and more variable tip growth in seedling root hairs, resulting in shorter and wider hairs than in wild-type plants.
January 2023 in “Journal of Cosmetics, Dermatological Sciences and Applications” In this study, researchers assessed the efficacy of Trichosera® hair serum, containing mesenchymal stromal cells conditioned media, among 40 healthy Indian volunteers, finding significant improvements in hair growth rate, hair density, scalp condition, and reduction in hair fall without notable adverse effects.
19 citations
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June 2008 in “Journal of Investigative Dermatology” This study found that transgenic mice with expression of HPV16 E6/E7 oncogenes showed improved ear tissue regeneration, including hair follicles and cartilage, without tumor formation.
November 2025 in “Nature Communications” This study used a 3D live imaging system to map cell dynamics in human hair follicles, revealing patterns of cell movement and division that help explain hair fiber extrusion during hair growth.
3 citations
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April 2002 in “Animal Science” This study found that intradermal spermidine injections stimulated cell proliferation and increased fibre length growth rate in wool follicles of Merino lambs, without significantly affecting fibre diameter.