72 citations
,
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.
40 citations
,
December 2012 in “PLoS ONE” Removing Ctip2 in skin cells causes skin inflammation similar to atopic dermatitis.
2 citations
,
September 2002 in “Dermatologic Surgery” Each group of hair follicles on the scalp shares one muscle that helps control hair movement.
January 2008 in “Medical Entomology and Zoology” 24 citations
,
January 2018 in “Development” Frizzled 3 and Frizzled 6 together control the orientation of mouse hair follicles.
14 citations
,
February 2014 in “Experimental Cell Research” The conclusion is that teeth, hair, and claws have similar stem cell niches, which are important for growth and repair, and more research is needed on their regulation and potential markers.
44 citations
,
May 2008 in “Acta Zoologica” Keratinization in embryos helped vertebrates adapt to land by forming a protective skin barrier.
June 2014 in “Experimental dermatology” The epidermis is crucial for hair growth.
245 citations
,
January 1998 in “Genes & Development” Hoxc13 gene is essential for hair, nail, and papilla development.
25 citations
,
September 2006 in “Birth Defects Research” Different processes create patterns in skin and things like hair and feathers.
64 citations
,
April 1992 in “Differentiation” Sciellin is a protein that helps form protective layers in skin, hair, and nails.
26 citations
,
December 2013 in “Seminars in cell & developmental biology” Skin varies in thickness, color, and features due to complex genetic and cellular processes.
15 citations
,
December 1972 in “Journal of Investigative Dermatology” 1 citations
,
March 2017 in “Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego” Domestic cat hair varies in thickness and length, with guard hairs being longest and thickest, and all hair types mainly contain keratin.
December 2004 in “Differentiation”
16 citations
,
January 2005 in “The International Journal of Developmental Biology” Hex gene plays a crucial role in starting feather development in chick embryos.
2 citations
,
August 2020 in “Scientific reports” Genes related to keratin, skin cell differentiation, and immune functions are key in hedgehog skin and spine development.
81 citations
,
September 2009 in “Birth defects research” Different body areas in mice produce different hair types due to interactions between skin layers.
9 citations
,
April 1985 in “Canadian Journal of Zoology” Moose have unique interdigital glands with green hairs and larger glands during mating season.
May 2026 in “The EMBO Journal” The study investigates the formation of feather follicles in avian skin using chicken and transgenic quail skin models. It reveals that novel cellular flows initiate chemo-mechanical circuits that guide the morphological transitions necessary for feather bud formation. Initially, stiff dermal condensates protrude from a softened epithelial sheet, activating YAP and causing the epithelial sheet to fold and form a cylindrical wall that invaginates into the skin. This process is crucial for forming tightly packed dermal papillae. The study contrasts this with scale development, where a rigid epithelial sheet restricts dermal cell flows, preventing further transformation. A topological transformation model was developed to describe how feather follicles evolved from scales.
14 citations
,
April 2016 in “PloS one” The KRTAP11-1 gene promoter is crucial for specific expression in sheep wool cortex.
7 citations
,
December 2011 in “Annals of anatomy” Involucrin helps strengthen the inner parts of human hair.
44 citations
,
November 2014 in “Tissue Engineering Part C Methods” Porcine skin varies by region, affecting its use as a human skin model.
April 2019 in “Journal of Investigative Dermatology” FGFR2 signaling controls Merkel cell formation in different skin regions.
August 2024 in “Archives of Dermatological Research” CHI3L1 and CXCL5 proteins help promote hair growth.
2 citations
,
January 2007 in “Actas Dermo-Sifiliográficas” Two cases of hairy elbows syndrome were described, with normal skin texture and symmetrical hair growth.
23 citations
,
January 2023 in “Journal of Developmental Biology” Reptile skin protects and prevents water loss, helping them adapt to land.
21 citations
,
June 2003 in “Journal of Morphology” Monotreme and marsupial skin proteins show primitive features and species-specific differences compared to placental mammals.
July 2025 in “Bioma Berkala Ilmiah Biologi” Wild boar skin from Timor Island has three layers with various structures like hair follicles and glands.
24 citations
,
March 2008 in “Neuroscience Research” Cat paws have complex touch sensors for detailed sensory processing.