September 2024 in “Digital Commons - University of South Florida (University of South Florida)” Hormones can change ptarmigan feather color from white to pigmented.
May 2022 in “Indian Journal of Animal Research” Melatonin receptor genes likely play an important role in the development of goose feather follicles.
January 2026 in “Biomaterials and Biosystems” Keratin from chicken feathers can be safely used on damaged skin.
17 citations
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September 2022 in “Genes & Genomics” Long non-coding RNAs affect feather growth in chickens in ways that don't follow traditional genetic rules.
4 citations
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February 2024 in “Poultry Science” miR-140-y helps control feather growth in geese by affecting the Wnt signaling pathway.
3 citations
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May 2024 in “Poultry Science” Certain genes are crucial for feather development in Wannan chickens.
January 2023 in “MIMESIS” The study concluded that McDonald's Father's Day ad uses a burger bun to symbolize a father, with colors and text celebrating the occasion and representing the brand's identity.
October 1890 in “Science” Pilocarpin can cause hair regrowth and color change in some cases but not in others, and it may have side effects in animals.
April 2019 in “Journal of Investigative Dermatology” Calcium signals and SHH guide the direction of feather growth in chicken skin.
4 citations
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August 2017 in “JAMA Dermatology” Norman Orentreich pioneered hair transplantation, improving techniques over time for more natural results.
January 2026 in “Health Food & Biotechnology” A hair serum with 3% keratin from chicken feathers made hair smoother, shinier, and more elastic.
September 2021 in “LAUTECH Journal of Civil and Environmental Studies”
March 2023 in “JAAD case reports” A new genetic change in the keratin 10 gene caused a skin condition called ichthyosis hystrix in a father and his daughter.
September 2020 in “Hair transplant forum international” O'Tar T. Norwood was a key figure in creating a system to classify male baldness and founding hair restoration societies.
36 citations
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November 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.
June 2004 in “Journal of Investigative Dermatology” Apoptosis may play a role in feather and hair development, SF-36 is better for mental health in skin patients, a psoriasis gene is found in Caucasians, eosinophils might not be crucial for some skin allergies, and changes in atopic dermatitis could increase skin sensitivity.
June 2021 in “International journal of research in dermatology” A boy and his father with hereditary hypotrichosis simplex were treated for hair loss, but the treatment result is unknown.
2 citations
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January 2017 in “International journal of genetics and genomics” Certain miRNAs are linked to chicken feather development.
32 citations
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October 1985 in “Annals of the New York Academy of Sciences” Keratin genes help explain how hair and feathers develop differently in mammals and birds.
7 citations
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January 1959 in “Canadian Journal of Chemistry” Human and horse hair have similar end groups to wool and feathers.
158 citations
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January 2009 in “The International Journal of Developmental Biology” Reptile scales help us understand the evolution of skin features like hair and feathers.
October 2014 in “Springer eBooks” Rabbit hair fibers are similar to wool and have a hollow center like feathers.
5 citations
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January 1993 in “PubMed” Retinoic acid can change skin structures in vertebrates, like turning scales into feathers or hair buds into glands.
Retinoic acid can change skin development, like turning scales into feathers or forming glands.
43 citations
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July 1994 in “Journal of Cell Science” Cross-linked proteins help maintain the structure of hair, feathers, and hagfish teeth.
2 citations
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September 2008 in “Fertility and Sterility” Adult offspring of sperm donation generally feel positive about their conception and view the donor as their biological father.
72 citations
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December 2018 in “Journal of Experimental Zoology Part B Molecular and Developmental Evolution” Corneous beta-proteins evolved uniquely in reptiles and birds, forming scales, claws, beaks, and feathers.
158 citations
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November 1998 in “Cell” β-catenin affects hair growth and can lead to tumors, needing more research for better understanding.
53 citations
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September 1999 in “Journal of Synchrotron Radiation” Keratinous tissues have multiple structural layers, including ordered keratin and lipid granules.
6 citations
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September 1957 in “Poultry Science” Adding copper helps turkey poults grow better when molybdenum is present.