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

Cysteine-rich keratins evolved independently in mammals, reptiles, and birds for hard skin structures like hair, claws, and feathers.

Monotreme hair structure and protein distribution are similar to other mammals, but their inner root sheath cornifies differently, suggesting a unique evolution from reptile skin.

Different combinations of human hair keratins affect how hair fibers form.

Keratins help protect cells, aid in cancer diagnosis, and influence cancer behavior and treatment.

Hair proteins have weak spots in their α-helical segments.

The document concludes that the human keratin gene cluster is complex, with a need for updated naming to reflect over 50 functional genes important for hair and skin biology.

The document concludes that understanding the genes and pathways involved in hair growth is crucial for developing treatments for hair diseases.

Hair growth is controlled by specific gene clusters and proteins, and cysteine affects hair gene expression in sheep.

A mutation in the KRT71 gene causes a hair disorder by disrupting hair follicle structure and texture.

Modified keratin binds better to hair, especially bleached hair.

Keratin 33A is a key protein in goat winter coats, especially in high-producing breeds.

The skin has multiple layers and cells, serves as a protective barrier, helps regulate temperature, enables sensation, affects appearance, and is involved in vitamin D synthesis.

Scientists have developed a method to keep chicken feather follicles alive and structurally intact in a lab for up to a week.

Scientists have found a way to create hair follicles from skin cells of newborn mice, which can grow and cycle naturally when injected into adult mouse skin.

Some hair loss disorders are caused by genetic mutations affecting hair growth.

Bleaching hair damages protein structure, especially keratin, leading to weakened hair.

Hair's strength and flexibility come from its protein structure and molecular interactions.

Genetic mutations cause various hair diseases, and whole genome sequencing may reveal more about these conditions.

Keratin from hair and wool is used in medical materials for healing and drug delivery.

KRT80 may worsen cancer by increasing growth and spread, but its full effects on treatment and outcomes need more research.

Sheep have a unique gene, KAP8-2, that humans don't have, which may affect wool properties.

Hard skin features like scales, feathers, and hair evolved through specific protein changes in different animal groups.

Human hair is made up of different keratins, some strong and some weak, with specific types appearing at various stages of hair growth.

Human hair follicles grown in vitro maintain normal keratin patterns and structure.

Hair follicles are valuable for regenerative medicine and wound healing.

Scientists successfully created mouse hair proteins in the lab, which are stable and similar to natural hair.

Hair is important for protection, social interaction, and temperature control, and is made of a growth cycle-influenced follicle and a complex shaft.

An apple-based supplement was found to stimulate hair protein production, which may help with hair growth.