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

Women with scarring alopecia are less likely to have used hormone replacement therapy or oral contraceptives compared to those with female pattern hair loss.

Neonate scalp hair is thinner, lacks a medulla, and has smaller follicles compared to adult hair.

A man with a rare skin condition and a new gene mutation developed high calcium levels due to his treatment.

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.

α3β1-integrin is crucial for maintaining normal hair follicle shape and function but not needed for the development of the surrounding skin.

The article concludes that advancements in hair cosmetics require dermatologists to stay informed about products and their potential risks, including allergies and higher risks for hairdressers.

The skin is a complex barrier that protects the body, regulates temperature, and helps with immune responses.

Human hair has more unsaturated fats inside than on the surface, and certain lipids may help bind the outer and inner layers together.

Lysosomal proteases and cytoplasmic enzymes help hair follicle cells develop and differentiate.

The skin has multiple layers and cells, serves as a protective barrier, helps regulate temperature, enables sensation, affects appearance, and is involved in vitamin D synthesis.

Hair's resistance to wear varies by ethnicity and treatment, with less wear indicating stronger hair.

Avoid chemical and physical damage to protect hair.

Topical treatments like AHAs, BHAs, and urea may help keratosis pilaris, but evidence is limited.

Indian medicinal plants can help with hair growth and common hair issues.

Keratinocytes and adipose-derived stem cells can effectively heal difficult skin wounds.

Understanding normal hair growth and loss in children is key to diagnosing and treating hair disorders.

Ovol2 is crucial for hair growth and skin healing by controlling cell movement and growth.

The Apc gene is crucial for normal skin and thymus development.

Adam10 enzyme is crucial for healthy skin and proper Notch signaling.

Long-standing benign tumors can become cancerous, especially in people with weakened immune systems.

The new assay can track and measure melanosome transfer between skin cells, confirming filopodia's role in this process.

Msx2 and Foxn1 are both crucial for hair growth and health.

Blocking BMP signaling causes hair loss and disrupts hair growth cycles.

JMJD3 and NF-κB activate Notch1, which is essential for skin cell movement and wound healing.

Thyroid hormone affects skin health, with too little causing rough, pale skin and too much leading to smooth, thin skin, and may also impact wound healing and skin conditions.

Skin and hair can help us understand organ regeneration, especially how certain stem cells might be used to form new organs.

Human sweat glands contain stem cells capable of self-renewal and forming different cell types.

Thyroid hormones affect skin texture, hair and nail growth, and can cause skin diseases related to thyroid problems.

Mummy hair's chemical composition may not accurately show ancient people's health due to environmental contamination.