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January 2016 in “PLoS ONE” Shorter daylight increases hair growth in Cashmere goats.
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120 citations
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November 2014 in “Biological Reviews” The telogen phase of hair growth is active and important for preparing hair follicles for regeneration, not just a resting stage.
January 2023 in “Pediatric Endocrinology Diabetes and Metabolism” Isolated pubic hair in infants is usually harmless and resolves on its own.
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December 1998 in “PubMed” Surgery on a 68-year-old woman with an ovarian tumor led to reduced hirsutism and normal testosterone levels.
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February 2013 in “Veterinary Dermatology” A young cat had a rare hair condition with twisted hair shafts but stayed healthy.
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July 2007 in “PubMed” Atrazine causes birth defects in rats, and finasteride can reliably create a hypospadias model.
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May 2012 in “Veterinary Dermatology” Different types of dog hair loss are linked to problems starting the hair growth phase and early hair cycle ending.
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July 2012 in “PLOS ONE” Estrogen can temporarily slow down hair growth but this can be reversed.
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January 2016 in “Andrology”
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March 2021 in “Journal of animal science/Journal of animal science ... and ASAS reference compendium” Blocking prolactin increases the activity of secondary hair follicles in cashmere goats.
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August 1994 in “Journal of Investigative Dermatology” Dexamethasone speeds up hair loss in mice, while cyclosporin A slows it down.
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December 1999 in “Journal of Investigative Dermatology” Certain genes are linked to wool follicle structure and function, but not hair cycle regulation.
100 citations
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April 2007 in “Neuroscience” Reducing neurosteroid levels worsens brain injury in fetal sheep.
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August 2001 in “PubMed” The stump-tailed macaque is a good model for studying human hair loss, but it's expensive and hard to find, while rodent models are promising for understanding hair growth and finding new treatments.
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February 2003 in “Annals of Neurology” Progesterone and related compounds may help control seizures linked to the menstrual cycle but have limitations that need addressing.