28 citations
,
September 1995 in “Biochemistry and Cell Biology” Merkel cells are more densely found in hairless skin areas like palms and soles.
128 citations
,
March 1989 in “Experimental Cell Research” Hoxc13 is important for hair and tongue development by controlling hair keratin genes.
17 citations
,
January 2013 in “Journal of Cutaneous Pathology” The onychodermis helps anchor the nail bed and may aid in nail formation.
46 citations
,
January 1991 in “Tissue and Cell” The male silkmoth's antenna develops olfactory structures over 21 days, with full hair formation by day 15.
130 citations
,
April 2001 in “Journal of Investigative Dermatology” The keratin tail is crucial for skin structure and function.
92 citations
,
April 2009 in “Journal of Investigative Dermatology” The Celsr1 gene is crucial for normal hair patterning in mice.
16 citations
,
January 2005 in “The International Journal of Developmental Biology” Hex gene plays a crucial role in starting feather development in chick embryos.
24 citations
,
September 2002 in “Dermatologic Surgery” The study found that hair follicles are above muscle connections in the scalp, which may help protect stem cell areas.
July 2024 in “Journal of Investigative Dermatology” Cell movements and forces shape feather growth in chicken skin.
24 citations
,
January 2018 in “Development” Frizzled 3 and Frizzled 6 together control the orientation of mouse hair follicles.
6 citations
,
October 2009 in “Veterinary Dermatology” Canine claws have complex structures with different keratin types, similar to hair and nails.
16 citations
,
June 2015 in “The journal of investigative dermatology/Journal of investigative dermatology” The enzyme DHHC13 is essential for healthy hair and skin, and its deficiency leads to hair loss and skin problems.
17 citations
,
June 1990 in “PubMed” Hair varies in size and features depending on body region.
14 citations
,
June 2020 in “BMC genomics” The study identified key genes that regulate the growth cycle of cashmere in goats, which could help improve breeding strategies.
25 citations
,
September 2006 in “Birth Defects Research” Different processes create patterns in skin and things like hair and feathers.
165 citations
,
September 2001 in “Genes & development” CDP is crucial for lung and hair follicle cell development.
July 2025 in “Bioma Berkala Ilmiah Biologi” Wild boar skin from Timor Island has three layers with various structures like hair follicles and glands.
January 1981 in “Purdue e-Pubs (Purdue University)” Pig skin is similar to human skin, with no major changes as they age.
26 citations
,
December 2013 in “Seminars in cell & developmental biology” Skin varies in thickness, color, and features due to complex genetic and cellular processes.
5 citations
,
July 1999 in “Journal of Anatomy” Methylene blue staining effectively highlights detailed nerve structures in rat fur.
22 citations
,
November 2008 in “The journal of investigative dermatology/Journal of investigative dermatology” Cystatin M/E helps in the final stages of hair and nail formation by controlling certain enzymes.
81 citations
,
September 2009 in “Birth defects research” Different body areas in mice produce different hair types due to interactions between skin layers.
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.
January 1996 in “TURKISH JOURNAL OF VETERINARY AND ANIMAL SCIENCES” Brown bear skin has two main layers, with the thickest skin on the back and thinnest on the belly.
October 1990 in “Spectrum Research Repository (Concordia University)”
3 citations
,
January 1998 in “ACTA HISTOCHEMICA ET CYTOCHEMICA” Hair keratins are mainly on macrofibrils in the cortex and in the endocuticle in the cuticle.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” Deleting the Hoxc13 gene in frogs shows its crucial role in developing skin structures similar to hair.
50 citations
,
March 2001 in “Clinics in dermatology” Human hair is complex and grows in cycles starting from embryonic life.
53 citations
,
September 1999 in “Journal of Synchrotron Radiation” Keratinous tissues have multiple structural layers, including ordered keratin and lipid granules.
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.