March 2014 in “CRC Press eBooks” Human head hair can grow very long and is thicker than most body hair.
11 citations
,
May 1995 in “The journal of investigative dermatology/Journal of investigative dermatology” August 2018 in “Journal of Investigative Dermatology” Humans evolved to have less hair and more sweat glands than chimpanzees and macaques.
17 citations
,
June 2012 in “Journal of experimental zoology. Part B, Molecular and developmental evolution” Hair in mammals likely evolved from glandular structures, not scales.
October 2018 in “InTech eBooks” The gene Foxn1 is important for hair growth, and understanding it may lead to new alopecia treatments.
Researchers found genes in sheep that may affect hair growth and wool quality.
14 citations
,
April 1976 in “Journal of Cutaneous Pathology” A calcified nodule on a boy's face came from hair follicles and expelled calcium through the skin.
13 citations
,
October 2020 in “BMC Genomics” Long non-coding RNAs play a key role in yak hair growth cycles.
19 citations
,
November 2017 in “General and comparative endocrinology” BMP2 and BMPR-IA may stop hair growth while Noggin may encourage it in yak skin.
81 citations
,
September 2009 in “Birth defects research” Different body areas in mice produce different hair types due to interactions between skin layers.
5 citations
,
August 2005 in “Anatomy and Embryology” Rat skin has a linear system of nerve fibers linked to hair follicles and muscles.
January 2026 in “Cosmoderma” A 9-year-old girl has a rare hair disorder causing beaded, sparse hair.
6 citations
,
April 1996 in “Journal of histochemistry and cytochemistry/The journal of histochemistry and cytochemistry” TGF-alpha is present in sheep and ferret skin and may affect hair growth without directly stimulating cell proliferation.
63 citations
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October 2011 in “Archives of Dermatology” Isolated long hairs at the original hairline can help diagnose Frontal Fibrosing Alopecia.
6 citations
,
May 2024 in “Developmental Biology” 2 citations
,
January 2010 Tianzhu white yak hair varies in structure and density between fuzz and coarse hair.
58 citations
,
November 1969 in “British Journal of Dermatology” Netherton's disease causes multiple hair defects.
20 citations
,
August 2003 in “Clinical and Experimental Dermatology” A new genetic mutation in the hairless gene causes a rare hair loss disorder.
8 citations
,
October 2011 in “Anthropologischer Anzeiger” Pubic hair is thicker than axillary and scalp hair, useful for forensic identification.
8 citations
,
October 2024 in “Developmental Cell”
18 citations
,
January 2019 in “Animal Biotechnology” A newly found RNA in Cashmere goats may play a role in hair growth and development.
7 citations
,
June 2012 in “Journal of dairy science” Bovine milk fats applied to mouse skin can promote hair growth similar to known hair growth treatments.
July 2023 in “Frontiers in veterinary science” Certain long non-coding RNAs are important for controlling hair growth cycles in sheep.
48 citations
,
July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair growth is controlled by specific gene clusters and proteins, and cysteine affects hair gene expression in sheep.
12 citations
,
July 2016 in “British journal of dermatology/British journal of dermatology, Supplement” Different hair fiber development might explain why hair loss severity varies in patients with a specific genetic mutation, and treatments that thicken hair could help.
53 citations
,
May 1986 in “Clinics in endocrinology and metabolism” Androgens like testosterone affect hair growth and oil production differently across body parts and individuals.
29 citations
,
January 2013 in “International Journal of Medical Sciences” Wnt10b helps hair follicle cells mature and produce pigment.
6 citations
,
June 1981 in “PubMed” Whisker hair in young people might predict severe future hair loss.
30 citations
,
October 2014 in “Experimental Dermatology” Leptin from skin fat can slow hair growth during certain phases.
6 citations
,
January 2017 in “Journal of toxicologic pathology” Rabbit skin with active hair growth shows thicker, redder areas due to larger, more numerous hair follicles and increased blood vessels.