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Stem cell self-renewal is complex and needs more research for full understanding.

Cathepsin L is essential for normal hair growth and development.

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

Postpartum depression is linked to changes in brain chemicals, inflammation, stress, and certain genes, and can potentially be identified by markers like specific steroids, serotonin levels, and vitamin D levels.

Microneedles improve drug delivery in various body parts, are safe and painless, and show promise in cosmetology, vaccination, insulin delivery, and other medical applications.

Memory regulatory T cells need IL-7, not IL-2, to stay in peripheral tissues.

Modern science supports the use of some Ayurvedic plants for health, as ancient practices suggested.

Masculine facial features may not reliably indicate heritable health, and more research is needed.

Matriptase is crucial for keeping epithelial tissues healthy and functioning properly.

The HR protein helps hair grow by blocking a hair growth inhibitor, aiding in hair follicle regeneration.

Stem cell therapy, particularly using certain types of cells, shows promise for treating hair loss by stimulating hair growth and development, but more extensive trials are needed to confirm these findings.

Stem cells in the hair follicle are regulated by their surrounding environment, which is important for hair growth.

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

Modulating BMP activity changes the number, size, shape, and type of ectodermal organs.

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

Low doses of some substances can be beneficial, while high doses can be harmful or toxic.

Mice hair growth patterns get more complex with age and can change with events like pregnancy or injury.

New targets for making and using brain-synthesized steroids could lead to better treatments for brain disorders and alcoholism.

The telogen phase of hair growth is active and important for preparing hair follicles for regeneration, not just a resting stage.

Estrogens help reduce skin aging, and SERMs might offer similar benefits without the risks of hormone therapy.

The article concludes that the wool follicle is a valuable model for studying tissue interactions and has potential for genetic improvements in wool production.

Hair grows faster in the morning and is more vulnerable to damage from radiation due to the internal clock in hair follicle cells.

Eflornithine cream effectively reduces women's unwanted facial hair but hair returns if treatment stops.

Blocking the Wnt pathway could lead to new treatments for cancer and tissue repair but requires careful development to avoid side effects.

Hair, teeth, and mammary glands develop similarly at first but use different genes later.

New micelle solutions greatly improve skin delivery of certain antifungal drugs.

Fetal wound healing changes with development, affecting inflammation and collagen, which may influence scarring.

Lowering testosterone speeds up wound healing in male mice.

We need more research to better understand human hair follicle stem cells for improved treatments for hair loss and skin cancer.