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Human hair varies widely and should be classified by curl type rather than race.

Hormones cause hair loss by affecting cell growth and weakening cell attraction.

Pitx2 helps outer root sheath cells differentiate but can't start hair growth on its own.

Smad1 and Smad5 are essential for hair follicle development and stem cell sleepiness.

Commercial hair loss websites promote Propecia by making men feel insecure about baldness and suggesting it's a medical issue needing treatment.

SIPHL1 from tomato enhances plants' response to low phosphate levels.

Progranulin overexpression leads to shorter, thinner hair and increased cell death in mouse hair follicles.

STIM1 is essential for sweat secretion.

Ovarian SAHA syndrome makes women with PCOS more resistant to insulin and increases their risk of blood sugar problems.

Some plant-based chemicals may help with hair growth, but more research is needed to confirm their effectiveness.

Testosterone and dihydrotestosterone have similar effects on body composition and metabolic health in men.

Newly found stem cells in horse hooves show promise for treating a hoof disease called laminitis.

Estrogen and androgenic hair increase melanoma risk, especially in European-ancestry individuals.

The trial aims to understand how obesity and lifestyle affect circadian rhythms in people with schizophrenia and bipolar disorder.

A protein called HIF-1a helps control hair growth genes and could be targeted to treat hair loss.

GDNF signaling helps in hair growth and skin healing after a wound.

People with alopecia have shorter hair follicles and more c-kit, a stem cell factor receptor, which could predict how the condition progresses.

Epidermal Wnt/β-catenin signaling controls fat cell formation and hair growth.

Special immune cells called Tregs can help prevent lung scarring by blocking a specific growth factor.

Using adipose derived stem cells and growth factors in hair transplants may improve healing and hair growth.

Birth control pills change the activity of certain inflammation and blood clotting genes in women with PCOS.

Covid-19 can cause hair loss due to immune and psychological factors.

The new scaffold with two growth factors speeds up skin healing and reduces scarring.

The calcineurin/NFAT pathway plays a significant role in the development and growth of a type of skin cancer called cutaneous squamous cell carcinoma.

Artificial skin development has challenges, but new materials and understanding cell behavior could improve tissue repair. Also, certain growth factors and hydrogel technology show promise for advanced skin replacement therapies.

Different types of stem cells in hair follicles play unique roles in wound healing and hair growth, with some stem cells not originating from existing hair follicles but from non-hair follicle cells. WNT signaling and the Lhx2 factor are key in creating new hair follicles.

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.

Environmental factors, hormones, nutrition, and stress all significantly affect skin health and aging.

Cancer development is like natural selection, involving mutated cells and environmental factors.

Different factors affect where drugs are absorbed in the small intestine, which is important for effective medication use.