May 2018 in “The journal of immunology/The Journal of immunology” Mutations in the FOXN1 gene cause severe immune issues but don't affect hair and nails.
4 citations
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August 2019 in “General and Comparative Endocrinology” Male yak hair growth is influenced by DHT synthesis, which is promoted by 5α-red1 and AR during growth phases, while E2 may inhibit growth through ERα.
15 citations
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September 1999 in “British Journal of Dermatology” Epimorphin, a protein, plays a key role in the development of hair follicles in human fetuses, but it doesn't help in maintaining the stem cell population of the follicular skin layer.
35 citations
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May 2011 in “Experimental Dermatology” Aging causes changes in hair follicles, leading to weaker hair growth.
20 citations
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June 2010 in “Genes and Immunity” Blood tests can help understand the genetic differences in people with alopecia areata, including how severe it is and if it's inherited.