1 citations
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October 2013 Different ectodermal organs like hair and feathers regenerate differently, with specific stem cells and signals involved in their growth and response to the environment.
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.
25 citations
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September 2006 in “Birth Defects Research” Different processes create patterns in skin and things like hair and feathers.
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.
November 2025 in “Frontiers in Veterinary Science” A 1.0% tyrosine diet increases melanin in chicken 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.
18 citations
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May 2023 in “Science Advances” Activating the sonic hedgehog pathway in chicken embryos can permanently change scales to 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.
18 citations
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October 2018 in “Journal of The American Academy of Dermatology” Some skin medications can harm male fertility, but they don't seem to cause birth defects from father's exposure.
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.
The keratin-based cream effectively repaired and improved damaged hair.
Light tickling can be unpleasant and may feel worse for individuals with autism.
6 citations
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November 2011 in “Journal of Dermatological Science” A new gene mutation may allow some piebaldism patients to regain skin color in white patches.
72 citations
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April 2008 in “Organogenesis” Wnt signaling is crucial for skin and hair development and its disruption can cause skin tumors.
15 citations
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December 2020 in “International journal of molecular sciences” Epidermal stem cells create and maintain skin structures like hair and nails through specific signaling pathways and vary by location and function.
8 citations
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March 2025 in “Developmental Biology” Integumentary organs adapt and evolve for survival, with potential uses in regenerative medicine.
4 citations
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June 2023 in “Journal of developmental biology” The skin systems of jawed vertebrates evolved diverse appendages like hair and scales from a common structure over 420 million years ago.
4 citations
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February 2023 in “iScience” Korean long-tailed chickens have unique genes valuable for ornamental breeding.
April 2025 in “Research Square (Research Square)” Hemp seed exosomes may help prevent hair loss caused by DHT.
April 2017 in “Journal of Investigative Dermatology” Chemotherapy and radiation therapy cause skin and hair damage by altering gene expression and signaling pathways.
January 1980 in “AFA Watchbird” Spectral-analysis can help diagnose mineral imbalances in birds.
32 citations
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May 1986 in “Archives of Dermatology” The condition is likely inherited in an autosomal-dominant pattern.
7 citations
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August 2017 in “Genetic testing and molecular biomarkers” A new mutation in the FLCN gene linked to Birt-Hogg-Dube syndrome was found, suggesting people with certain lung collapse should be tested for this mutation and screened for kidney and colon cancer.