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Excess vitamin A changes skin and hair follicle development and affects polysaccharide distribution.

Certain human skin cells marked by CD44 and ALDH are rich in stem cells capable of long-term skin renewal.

Hair growth is cyclic and influenced mainly by local factors.

The skin protects the body and is constantly renewed by stem cells; disruptions can lead to cancer.

The enzyme type 1 5α-reductase is more active in the hair follicle's lower part than in the skin's outer layer.

Skin cells and certain hair follicle areas produce hemoglobin, which may help protect against oxidative stress like UV damage.

Apoptosis is essential for human skin development and forming a functional epidermis.

Hairless protein and putrescine regulate each other, affecting hair growth and skin balance.

Involucrin helps strengthen the inner parts of human hair.

Grafted rodent and human cells can regenerate hair follicles, but efficiency decreases with age.

Llamas often have skin issues like mange, bacterial infections, and allergies, with some treatable by zinc.

Adult skin cell-based early-stage skin substitutes improve wound healing and hair growth in mice.

Sheep wool follicles absorb different amino acids at various rates and locations, which could affect wool growth based on diet and genetics.

Skin stem cells can help improve skin repair and regeneration.

Skin stem cells are crucial for maintaining and repairing the skin and hair, using a complex mix of signals to do so.

The document concludes that while significant progress has been made in understanding skin biology and stem cells, more research is needed to fully understand their interactions with their environment.

Changes in keratin affect skin health and can lead to skin disorders like blistering diseases and psoriasis.

Adult stem cells with Tp63 can form hair and skin cells when placed in new skin, showing they have hidden abilities for skin repair.

Environmental cues can change the fate and function of epithelial cells, with potential for cell therapy.

Micrografts and minigrafts for hair restoration provide high patient satisfaction and can cover large areas of hair loss, including sideburns, eyebrows, and beards.

Cholesterol sulfate buildup due to a genetic mutation disrupts the skin barrier, leading to the scaling skin seen in X-linked ichthyosis.

The protein CTCF is essential for skin development, maintaining hair follicles, and preventing inflammation.

Skin can heal wounds without hair follicle stem cells, but it takes a bit longer.

A new 3D culture system helps grow and study mouse skin stem cells for a long time.

Skin cells show flexibility in healing wounds and forming tumors, with potential for treating hair disorders and chronic ulcers.

Skin stem cells interacting with their environment is crucial for maintaining and regenerating skin and hair, and understanding this can help develop new treatments for skin and hair disorders.

Epidermal Wnt/β-catenin signaling controls fat cell formation and hair growth.

PAD3 plays a key role in hair and skin protein structure and may be linked to skin diseases.

TGM3 is important for skin and hair structure and may help diagnose cancer.

Adding a specific gene to skin cells can help treat skin disorders like psoriasis.