22 citations
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December 2016 in “PloS one” A specific protein in chicken embryos links early skin layers to feather development.
13 citations
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December 2018 in “Development, Growth & Differentiation” Sex hormones, especially estradiol, can change chicken feather shapes and colors.
36 citations
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December 2019 in “Molecular biology and evolution” Cysteine-rich keratins evolved independently in mammals, reptiles, and birds for hard skin structures like hair, claws, and feathers.
23 citations
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December 2004 in “Differentiation” Sex hormones affect hair and feather growth and may help manage alopecia and hormone-dependent cancers.
12 citations
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December 2018 in “Biotechnology reports” Recombinant keratin K31 makes damaged hair thicker, stronger, and straighter.