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Mice without the vitamin D receptor have bone issues and other health problems, suggesting vitamin D is important for preventing various diseases in humans.

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

Epithelial stem cells are crucial for tissue renewal and repair, and understanding them could improve treatments for damage and cancer.

Hair follicle development is controlled by interactions between skin tissues and specific molecular signals.

Some wound-healing cells can turn into fat cells around new hair growth in mice.

Hair growth phase and certain genes can speed up wound healing, while an inflammatory mediator can slow down new hair growth after a wound. Understanding these factors can improve tissue regeneration during wound healing.

Changing how mesenchymal stromal cells are grown can improve their healing abilities.

The conclusion is that proper signaling is crucial for hair growth and development, and errors can lead to cancer or hair loss.

Androgens can both increase and decrease hair growth in different parts of the body.

Skin needs dermal β-catenin activity for hair growth and skin cell multiplication.

Hair follicle development and microbes help regulatory T cells gather in newborn skin.

Skin cells produce and activate vitamin D, which regulates skin functions and supports hair growth.

A substance called DKK-1 increases in balding areas and causes hair cells to die when exposed to DHT.

Vitamin D and its receptor regulate skin functions like cell growth, immunity, hair cycle, and tumor prevention.

The WNT signaling pathway is important in many diseases and targeting it could offer new treatments.

Skin aging is due to impaired stem cell mobilization or fewer responsive stem cells.

Exosomes could potentially enhance tissue repair and regeneration with lower rejection risk and easier production than live cell therapies.

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.

Macrophages help regrow hair by activating stem cells using AKT/β-catenin and TNF.

The research identified various cell types in mouse and human teeth, which could help in developing dental regenerative treatments.

MicroRNA-214 is important for skin and hair growth because it affects the Wnt pathway.

The Wnt/β-catenin pathway helps tissue regeneration but can also cause fibrosis, and drugs that inhibit this pathway may aid in healing skin and heart tissues.

TNF family proteins are crucial for the development of skin features like hair, teeth, and mammary glands.

Skin development in mammals is controlled by key proteins and signals from underlying cells, involving stem cells for maintenance and repair.

The TGF-β family helps control how cells change and move, affecting skin, hair, and organ development.

The conclusion is that hair growth can be improved by activating hair cycles, changing the surrounding environment, healing wounds to create new hair follicles, and using stem cell technology.

Wnt signaling is crucial for skin and hair development and its disruption can cause skin tumors.

The conclusion is that Fgf18 and Tgf-ß signaling could be targeted for hair loss treatments.

The document concludes that for hair and feather growth, it's better to target the environment around stem cells than the cells themselves.

Wnt signaling is crucial for skin wound healing and reducing scars.