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Different types of stem cells exist within individual skin layers, and they can adapt to damage, transplantation, or tumor growth. These cells are regulated by their environment and genetic factors. Tumor growth is driven by expanding, genetically altered cells, not long-lived mutant stem cells. There's evidence of cancer stem cells in skin tumors. Other cells, bacteria, and genetic factors help maintain balance and contribute to disease progression. A method for growing mini organs from single cells has been developed.

Rac1 is essential for proper hair structure and color.

Using developmental signaling pathways could improve adult wound healing by mimicking scarless embryonic healing.

Special fiber materials boost the healing properties of certain stem cells.

EGFR helps control how hair grows and forms without needing p53 protein.

The protein Par3 is crucial for healthy skin, affecting the skin barrier, cell differentiation, and stem cell maintenance.

The testes produce sperm and hormones essential for male development.

Androgens and androgen receptors are important for metabolic health, affecting how the body uses glucose and fats through mitochondrial function.

Stem cells help repair tissue mainly by releasing beneficial substances, not by replacing damaged cells.

Regenerative cellular therapies show promise for treating non-scarring hair loss but need more research.

Estrogen can temporarily slow down hair growth but this can be reversed.

Metabolism plays a key role in determining stem cell fate.

Dandruff might be caused by changes in how hair follicles naturally release oils and an immune response to this imbalance.

Disrupted stem cell signals in hairpoor mice cause hair loss.

Disrupting a specific protein's function in hair follicle stem cells triggers their activation and a self-healing process.

SCD1 is important for hair growth by keeping the connection in skin cells where hair stem cells live stable.

Hair follicle stem cells are crucial for touch sensation and proper nerve structure in mice.

Gene therapy with the Math1 gene helped regenerate balance-related cells and improve balance in mice.

Nuclear hormone receptors play a significant role in skin wound healing and could lead to better treatment methods.

Skin cell behavior is influenced by the tightness of nearby cells, affecting their growth and development.

Certain immune cells contribute to skin autoimmune diseases, and some treatments can reverse hair loss in these conditions.

A specific enzyme is essential for proper hair follicle stem cell development and healthy skin.

Healthy mitochondria in skin cells are essential for proper hair growth and skin cell interaction in mice.

The skin's internal clock affects healing, cancer risk, aging, immunity, and hair growth, and disruptions can harm skin health.

Spermidine may help reduce hair loss and deserves further testing as a treatment.

Biomaterials with MSC-derived substances could improve tissue repair and have advantages over direct cell therapy.

Sebalgukhwa-san (SGS) can help treat hair loss without liver toxicity.

Tetrathiomolybdate reduces hair growth marker in skin cells by boosting harmful oxygen molecules, but effects can be reversed.

Hair follicle stem cells prevent melanocyte stem cells from differentiating by controlling retinoic acid levels.

Skin fat has important roles in hair growth, skin repair, immune defense, and aging, and could be targeted for skin and hair treatments.