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Different ethnic hair types have unique nanoscopic and molecular features despite having the same basic keratin structure.

Arg1+ macrophages may play a role in Alopecia Areata, offering new treatment targets.

Mammalian hair scales change from smooth to wavy due to friction.

Keratoacanthomas and squamous cell carcinomas have similar keratin patterns, making them hard to tell apart.

Melasma results from changes in the skin's pigment and structure, not just pigment cell growth.

Vertebrate skin evolved to be more specialized and complex, especially in land animals.

The Persian cat has a skin infection caused by a fungus, treatable with antifungal medication.

Mouse skin and hair aging starts at 200 days, with changes in hair follicles and more white hairs as signs of aging.

Spiny keratoderma may be ectopic hair formation on palms and soles.

Trichothiodystrophy hair is structurally abnormal with protein and organization issues.

Researchers created hair-inducing human cell clusters using a 3D culture method.

Poliosis circumscripta is a patch of white hair caused by lack of melanin, linked to genetic and acquired conditions.

Alopecia areata causes patchy hair loss, and certain hair features can suggest its presence.

A new benign nail tumor called onychoblastoma was identified.

Vicuña wool's quality is due to a high density of fine secondary hair follicles, and their skin glands may be used for communication.

The document suggests "anisotrichosis" as a new term for hair thickness variation in common baldness.

A new genetic mutation in the hairless gene causes a rare hair loss disorder.

Trichohyalin in sheep hair follicles may help with structure and calcium binding.

Better documentation of alopecia areata in Black individuals is needed to improve diagnosis.

Four antibodies were developed to help study hair follicle cell differentiation.

A giant blue nevus on the scalp can cause hair loss and may damage underlying structures.

Hair and nail cells share similar proteins, indicating a common differentiation pathway.

Hair follicles protect melanocytes from sun damage, helping them replenish skin.

Skin cysts might help advance stem cell treatments to repair skin.

Foreign-body granuloma may be a marker for late-stage Lichen Planopilaris and should be considered in diagnosis.

A baby had a rare condition with abnormal blood vessels in the brain and unusual skin and hair growth, possibly a new syndrome.

Steatocystoma multiplex is a skin condition starting around age 26, linked to hair follicles, and related to eruptive vellus hair cysts.

Cats and dogs with dermatophytosis show skin issues, with dogs having more severe symptoms.

Lustre mutant sheep have normal hair structure and proteins but differ in felting properties.

Giant axonal neuropathy changes the structure of keratin in human hair.