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The human scalp hair bulb contains different types of melanocytes with varying abilities to produce melanin.

Involucrin helps strengthen the inner parts of human hair.

Keratin genes help explain how hair and feathers develop differently in mammals and birds.

Nestin-expressing cells turn into a specific type of skin cell in hair follicles during development and in adults.

Poromas are related to sweat duct cells, and CK patterns help distinguish apocrine poromas from other neoplasms.

Keratinization in embryos helped vertebrates adapt to land by forming a protective skin barrier.

Stem cells are in deep skin layers, while differentiating cells are in shallow layers.

Human hair growth and structure are influenced by keratin proteins, genes, melanin, and lipids.

Innate immunity genes in hair follicle stem cells might have new roles beyond traditional immune functions.

Human hair has different protein structures in its cuticle and cortex.

Hair structure forms the same way inside and outside the body.

Different racial groups have varying keratin proteins, affecting hair texture and strength.

Androgens significantly regulate hair keratin K37 expression.

Human hair proteins can help blood clot when mixed in equal parts.

Guinea-pig hair and follicle proteins are mostly similar, but follicles have more group 2 proteins and fewer group 3 and 4 proteins.

Hox proteins help maintain keratinocyte identity by regulating miRNA expression.

The document concludes that recent research has improved understanding of skin diseases and the balance between cell growth and differentiation in the epidermis.

The TRPV3 channel structure changes linked to severe itch and hyperkeratosis were identified using cryo-EM.

The enzymes Tet1, Tet2, and Tet3 are important for the development of hair follicles and determining hair shape by controlling hair keratin genes.

The document concludes that different patterns of hair thickness and scalp changes can help diagnose types of non-scarring hair loss.

Sheep with chronic Sarcoptes scabiei dermatitis have altered keratin expression in their skin.

Ubiquitin, a protein, is found in hair, nails, and skin.

Trichoepithelioma and desmoplastic trichoepithelioma have distinct features that can be identified using reflectance confocal microscopy.

Transglutaminases help form strong hair by linking proteins, and can potentially alter hair properties.

Microfibrils are key for permanent waves, and hydrolyzed keratin improves wave formation and hair condition.

Mutant keratins cause inflammation in Epidermolysis Bullosa Simplex, suggesting targeting them could help treat the disorder.

Hair is complex, varies in type, and plays a big role in attractiveness and culture.

Retinoids can help treat skin disorders by improving the skin's outer layer.