1 citations
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October 2017 in “Frontiers in Physiology” Hair follicle keratin may have been used in tooth enamel evolution.
17 citations
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June 2012 in “Journal of experimental zoology. Part B, Molecular and developmental evolution” Hair in mammals likely evolved from glandular structures, not scales.
41 citations
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October 2008 in “The American journal of pathology” Blocking a specific protein signal can make hair grow on mouse nipples.
15 citations
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July 2004 in “Journal of morphology” Monotreme hair structure and protein distribution are similar to other mammals, but their inner root sheath cornifies differently, suggesting a unique evolution from reptile skin.
86 citations
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April 2009 in “Journal of anatomy” Hard skin features like scales, feathers, and hair evolved through specific protein changes in different animal groups.