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The document provides a method to classify human hair growth stages using a model with human scalp on mice, aiming to standardize hair research.

Planarian regeneration begins with a specific gene activation caused by injury, essential for healing and tissue regrowth.

More dermal papilla cells in hair follicles lead to larger, healthier hair, while fewer cells cause hair thinning and loss.

The Multi-Organ-Chip improves the growth and quality of skin and hair in the lab, potentially replacing animal testing.

Certain cells from hair follicles can create new hair and contribute to hair growth when implanted in mice.

Iron deficiency may be related to hair loss, but there's not enough evidence to recommend iron screening or supplements for all hair loss patients.

Scientists have found a way to create hair follicles from skin cells of newborn mice, which can grow and cycle naturally when injected into adult mouse skin.

The hedgehog signaling pathway is crucial for hair growth but not for the initial creation of hair follicles.

Targeted cancer therapies often cause serious skin problems that need careful management.

Alopecia areata is likely an autoimmune disease with unclear triggers, involving various immune cells and molecules, and currently has no cure.

Androgens may cause hair loss by increasing TGF-beta1 from scalp cells, which inhibits hair cell growth.

Researchers found 19 genes important for root hair growth in a plant called Arabidopsis.

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

Hair follicle dermal stem cells are key for regenerating parts of the hair follicle and determining hair type.

Certain mutations in a hair growth-related gene cause a type of genetic hair loss.

Menopause can lead to skin and hair problems due to hormonal changes, but hormone replacement therapy might help slow these effects.

Cancer treatments targeting specific cells and the immune system can cause skin, mouth, hair, and nail problems, affecting patients' quality of life and treatment adherence.

Regenerated fully functional hair follicles using stem cells, with potential for hair regrowth therapy.

Trichoscopy is a useful tool for diagnosing different hair and scalp diseases by their unique visual features.

COVID-19 can cause different skin symptoms that may help with early diagnosis and show how severe the disease is.

Bone Morphogenetic Proteins (BMPs) help control skin health, hair growth, and color, and could potentially be used to treat skin and hair disorders.

Capsaicin, found in chili peppers, can slow down hair growth by affecting skin cells and hair follicles.

Wnt signaling controls whether hair follicle stem cells stay inactive or regenerate hair.

Chemotherapy can cause skin problems like hair loss, mouth sores, and skin darkening, and recognizing these can affect treatment decisions.

Lower doses of treatments for hirsutism and acne in PCOS are effective and cause fewer side effects.

High androgen levels in young women with PCOS are linked to higher blood pressure.

Zinc is effective for treating various skin conditions, including warts and acne.

Hair follicle stem cells are key for hair and skin regeneration, can be reprogrammed, and have potential therapeutic uses, but also carry a risk of cancer.

Male hormones, particularly DHT, are linked to male pattern hair loss, and treatments like finasteride can help, but they don't work for postmenopausal women's hair loss, which may have different causes.

Stem cell niches support, regulate, and coordinate stem cell functions.