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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.

Prolactin contributes to hair loss by promoting hair follicle shrinkage and cell death.

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

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

Stress can stop hair growth in mice, and treatments can reverse this effect.

Oxidative stress contributes to hair graying and loss as we age.

Janus kinase inhibitors are promising treatments for autoimmune skin diseases like eczema and psoriasis.

Dexamethasone speeds up hair loss in mice, while cyclosporin A slows it down.

Hair follicles produce and respond to melatonin, affecting hair growth and sensitivity to estrogen.

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.

Ruby laser pulses best destroy hair follicles during the growth phase and effectiveness varies with laser intensity; melanin is key for targeting, and timing treatments can improve results.

Liposomes could improve how skin care products work but are costly and not very stable.

Melatonin helps regulate hair growth and protects the hair follicle from stress.

Skin-derived precursors in hair follicles come from different origins but function similarly.

Survivors of Stevens-Johnson syndrome/toxic epidermal necrolysis need ongoing care for various long-term health problems.

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

New treatments for Alopecia Areata show promise but need to be more effective and affordable.

Scientists created stem cells that can grow hair and skin.

Hair ages due to genetics and environmental factors, leading to graying and thinning, with treatments available for some conditions.

Hair follicles are hormone-sensitive and involved in growth and other functions, with potential for new treatments, but more research is needed.

The sebaceous gland has more roles than just producing sebum and contributing to acne, and new research could lead to better skin disease treatments.

Hormones significantly affect hair and oil gland function in the skin, and more research is needed on skin-related hormone disorders.

No treatment fully prevents hair loss from chemotherapy yet.

Notch/CSL signaling controls hair follicle differentiation through Wnt5a and FoxN1.

Peripilar signs can help diagnose androgenetic alopecia and reveal its cause.

Lichen planus pigmentosus causes dark skin patches and is treated by avoiding triggers and using anti-inflammatory medications.

EGF makes hair follicles grow longer but stops hair production.

Male pattern baldness involves smaller hair follicles, larger oil glands, and other tissue changes, but not major blood supply issues.

Oxidative stress affects hair loss in men with androgenetic alopecia.

Alopecia areata is likely caused by a combination of genetic factors and immune system dysfunction, and may represent different diseases with various causes.