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The study found that giant pandas have more melanin in black hair follicles than white, with gene expression differences that could affect hair color and skin health.

The enzyme that changes testosterone to a stronger form is mostly found in the part of the hair follicle called the dermal papilla.

Keratin-associated proteins have ancient origins and were used for different purposes before being adapted for hair in mammals.

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

Altered retinoid metabolism in cicatricial alopecia suggests a balanced vitamin A diet may prevent the condition.

Hair transplantation can improve scars after removing a rare skin cancer.

Artemis protein may help control hair growth and health by influencing cell processes.

An 8-year-old girl with vitiligo developed extra hair growth on her knee after using tacrolimus ointment.

Aging causes changes in scalp cells that can negatively affect hair health.

Tooth papilla cells can help regenerate hair follicles and grow hair.

A new PAX9 gene mutation causes missing teeth and hair problems, but not skin or nail issues.

Testosterone may slow down wound healing and increase inflammation.

The Siah1 and Siah2 genes are active in mouse skin development and hair growth, especially right after birth.

Hidradenitis suppurativa is caused by genetic factors, inflammation, bacteria, hormones, and lifestyle factors like obesity and smoking.

A 17-year-old female with adrenogenital syndrome produces very high levels of androgens, which prevent complete feminization despite high estrogen doses.

Glucocorticoids and sex hormones affect skin health, with potential for targeted treatments to minimize side effects and treat skin conditions.

DHEA acts like a male hormone on rat skin glands and doesn't turn into female hormones there.

The interdigital gland of Vembur sheep shows sex-based differences in size and chemical makeup, possibly affecting communication and disease protection.

Birth control pills with low-dose estrogen and antiandrogenic progestins can effectively treat acne.

Acne can be managed with various treatments and requires psychological support due to its emotional impact.

New research suggests that skin cell renewal may not require a special type of cell previously thought to be essential.

The human hair follicle can store topical compounds and be targeted for drug delivery with minimal side effects.

Hair, teeth, and mammary glands develop similarly at first but use different genes later.

Human sebaceous glands contain enzymes that affect androgen production and may influence sebum production and acne.

Topical Vorinostat shows promise for treating alopecia areata by promoting hair regrowth.

Oestrogens help maintain healthy skin, heal wounds, and may protect against skin aging and cancer.

Scientists created a 3D skin model to study a chronic skin disease and test treatments.

Different types of skin cells play specific roles in development, healing, and cancer.

Reflectance confocal microscopy is useful for diagnosing and monitoring skin diseases, but it has limitations and requires expertise for correct use.

The document concludes that hair follicles have a complex environment and our understanding of it is growing, but there are limitations when applying animal study findings to humans.