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Skin structure complexity and variability are crucial for assessing skin toxicity in safety tests.

Scientists created early-stage hair follicles from human skin cells, which could help treat baldness and study hair growth.

Jagged-1 in skin Tregs is crucial for timely wound healing by recruiting specific immune cells.

Hyaluronic acid injections improve skin thickness and quality, protecting against aging in rats.

Calcium signals and SHH guide the direction of feather growth in chicken skin.

Eating grape powder may reduce the severity of skin allergy symptoms.

Nrf2 helps protect skin from damage but too much can cause skin problems.

After skin injury, adult mice can grow new hair follicles, and this process can be increased or stopped by manipulating Wnt signals.

African spiny mice can regenerate skin, hair, and cartilage, but not muscle, and their unique abilities could be useful for regenerative medicine.

Human skin makes sexual hormones that affect hair growth, skin health, and healing; too much can cause acne and hair loss, while treatments can manage these conditions.

The skin's layers protect, sense, and regulate the body's internal balance, but can be prone to cancer.

The document concludes that mouse models are helpful but have limitations for skin wound healing research, and suggests using larger animals and genetically modified mice for better human application.

Fat cells help recruit healing cells and build skin structure during wound healing.

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

A man with vitiligo and alopecia saw quick skin and hair improvement with ruxolitinib, but skin color gains were lost after stopping treatment.

Tight junctions are key for skin protection and controlling what gets absorbed or passes through the skin.

Memory T cells in the skin balance staying put and moving into the blood, clustering around hair follicles, and increasing in number after infection.

Male and female skin differ due to hormones, affecting conditions like hair loss, acne, and skin cancer, and suggesting a need for gender-specific treatments.

Bioprinting could improve wound healing but needs more development to match real skin.

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

Pregnancy can cause skin darkening, varicose veins, more sweating, hair growth, hair loss after birth, nail changes, and gum inflammation.

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

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

Understanding how cells die in the skin is important for treating skin diseases and preventing hair loss.

Cytokeratin 19 and cytokeratin 15 are key markers for monitoring the quality and self-renewing potential of engineered skin.

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

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

Pregnancy can cause skin pigmentation, stretch marks, and changes in hair, nails, and sweat glands, with most resolving after birth.

Sensitive skin is often caused by nerve fibers and environmental factors, and can be managed with mild skincare and professional advice.

Fatty acid transport protein 4 is essential for skin and hair development.