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

Nanoparticles improve drug delivery through the skin but more research is needed on their long-term effects and skin penetration challenges.

Estrogen therapy can reduce skin aging but has cancer risks.

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

Different types of stem cells with unique roles exist in blood, skin, and intestines, and this variety is important for tissue repair.

Different types of stem cells and their environments are key to skin repair and maintenance.

Fat-derived stem cells show promise for skin repair and reducing aging signs but need more research for consistent results.

Skin grafts on mice can cause an immune response leading to hair loss, useful for studying human hair loss conditions.

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

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.

KGF and activin are crucial for skin healing and repair.

Skin's Regulatory T cells are crucial for maintaining skin health and could be targeted to treat immune-related skin diseases and cancer.

The document concludes that adult mammalian skin contains multiple stem cell populations with specific markers, important for understanding skin regeneration and related conditions.

Fetal skin heals without scarring due to unique cells and processes not present in adult skin healing.

Drosha and Dicer are essential for hair follicle health and preventing DNA damage in skin cells.

Oestrogens help maintain healthy skin, heal wounds, and may protect against skin aging and cancer.

Skin fat plays a key role in immune defense and healing beyond just storing energy.

Bismuth subgallate and borneol together improve skin wound healing better than when used separately or compared to other treatments.

Cytokines and neuropeptides are key in controlling androgen levels, affecting skin and hair conditions.

Skin aging is largely due to differences in stiffness and elasticity between skin layers, leading to wrinkles.

Fetal cells could improve skin repair with minimal scarring and are a potential ready-to-use solution for tissue engineering.

The protein SLC1A3 is important for activating skin stem cells and is necessary for normal hair and skin growth in mice.

Thyroid hormones are important for skin health and changes in them can affect conditions like hair loss and eczema.

The conclusion is that CD90 is not a specific marker for fibroblast subtypes and better methods are needed to identify them.

New skin substitutes for treating severe burns and chronic wounds are being developed, but a permanent solution for deep wounds is not yet available commercially.

The document concludes that there is a significant lack of reporting on the sex and age of cells in skin research, which could affect clinical trials and treatments.

A new liposome treatment helps heal deep burns on mice by improving hair regrowth and reducing scarring.

EPR spectroscopy showed that spontaneous hair growth results in thicker skin and less pigmented hair than depilation-induced growth.

The spiny mouse can regenerate its skin without scarring, which could help us learn how to heal human skin better.

Bioactive molecules show promise for improving skin repair and regeneration by overcoming current challenges with further research.