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Two main types of fibroblasts with unique functions and additional subtypes were identified in human skin.

Planarian regeneration begins with a specific gene activation caused by injury, essential for healing and tissue regrowth.

Deleting the PTEN gene in mice causes nerve cells to grow larger and heal better after injury, but may cause overgrowth and hair loss in older mice.

Keratinocytes help heal skin wounds by interacting with immune cells and producing substances that kill pathogens.

Fat cells are important for healthy skin, hair growth, and healing, and changes in these cells can affect skin conditions and aging.

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

Wnt4 protein makes the outer skin layer thicker in burn wounds by turning on a specific healing pathway and loosening the connections between skin cells.

The conclusion is that accurately replicating the complexity of the extracellular matrix in the lab is crucial for creating realistic human tissue models.

Adding insulin-like growth factor 1 and bone marrow-derived stem cells to a collagen-chitosan scaffold helps wounds heal faster and regrows hair follicles.

Baricitinib and its combination with lonafarnib improve fat cell formation in certain genetic disorders.

Radiation therapy damages skin structure and immune function, causing inflammation and potential hair loss.

Fibroblast Growth Factor-9 helps repair heart damage after a heart attack by creating new blood vessels, especially in diabetics.

Vitamin A is important for healthy skin and hair, influencing hair growth and skin healing, but UV light reduces its levels.

Nanofat shows promise for facial rejuvenation and treating skin issues but needs more research for long-term safety.

Laser treatment and synovial fluid can change hair follicle cells to resemble joint cells, with the changes being more significant when both treatments are used together.

Extracellular vesicles show promise for wound healing, but more research is needed to improve their stability and production.

Leptin, a hormone from fat cells, affects immune responses and can influence skin diseases and hair growth.

The Wnt/β-catenin pathway is important for body functions and diseases, and targeting it may treat conditions like cancer, but with safety challenges.

Extracellular vesicles show promise for treating psoriasis by reducing inflammation and skin lesions.

Melanocytes are important for skin and hair color and protect the skin from UV damage.

Glypican-1 is important for blood vessel growth in hair follicles and could help treat hair loss.

Hair follicle-derived extracellular vesicles may help heal chronic wounds as effectively as those from adipose tissue.

Hair is a complex organ, and understanding its detailed structure and growth phases is crucial for analyzing substances within it.

Low testosterone and 5α-reductase inhibitors can harm men's metabolic and sexual health; testosterone therapy may help, but discussing 5α-RIs' side effects is important.

Some cosmetic procedures show promise for treating hair loss, but more research is needed to confirm their safety and effectiveness.

Newborn mouse skin cells can grow hair and this process can be recreated in adult cells to potentially help with hair loss.

Skin has specialized touch receptors that can tell different sensations apart.

Leptin affects skin and hair health and may worsen some skin conditions, but more research is needed to understand its full impact.

Surface-modified nanostructured lipid carriers can improve hair growth treatments.

Gene therapy has potential as a future treatment for Hutchinson-Gilford progeria syndrome.