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The research identified two types of keratinocytes in chicken scales: one for hard scales and another for soft skin, with similarities to human skin differentiation.

KRT85 gene variations can help improve wool traits in sheep through selective breeding.

Hard skin features like scales, feathers, and hair evolved through specific protein changes in different animal groups.

Hormone therapy affects hair growth in transgender individuals, with testosterone potentially causing hair loss in trans men and estrogen reducing facial/body hair in trans women; treatment options vary.

Hair diversity is influenced by complex genetics and environmental factors, requiring more research for practical solutions.

Understanding wool keratin-associated proteins in sheep can help improve wool quality through selective breeding.

5α reductase type 2 enzyme mutation and oxidative stress may increase androgenetic alopecia risk in Egyptians.

Permanent hair dyes use chemicals that react with hydrogen peroxide to create color.

SA linked to mitochondrial issues and oxidative stress, while AGA involves disrupted hair growth genes.

Animals that change color with the seasons mainly do so in response to daylight changes, but climate change is causing camouflage problems that may require evolutionary changes.

P-cadherin is important for hair growth and health, and its problems can cause hair and skin disorders.

Hair follicle development is controlled by interactions between skin tissues and specific molecular signals.

Certain immune cells contribute to skin autoimmune diseases, and some treatments can reverse hair loss in these conditions.

Feed restriction in sheep leads to finer wool fibers but may reduce wool quality.

A specific protein in chicken embryos links early skin layers to feather development.

Dihydrotestosterone (DHT) stops hair growth in mice by lowering a growth factor important for hair.

The hair masks are safe, stable, and effective for hair care.

Storing hair follicle micrografts for longer times can cause them to enter a state similar to the natural hair shedding phase, which might impact hair transplant results.

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

PPARγ is essential for maintaining healthy skin, controlling inflammation, and ensuring proper skin barrier function.

Plant extracts can help prevent hair loss and promote hair growth.

Hair follicle melanocytes die during hair regression.

Using extracellular vesicles from stem cells can help hair grow by affecting scalp cells and hair follicles.

Stress may contribute to hair loss in alopecia areata by affecting immune responses and cell death in hair follicles.

Human hair follicle dermal cells can effectively replace other cells in engineered skin.

The research found that postmortem root bands in hair are likely caused by the breakdown of a specific part of the hair's inner structure after death.

Hormones and genetics affect hair growth and patterns, with some changes reversible and others not.

The study found key factors in the cause of hidradenitis suppurativa, its link to other diseases, and identified existing drugs that could potentially treat it.

The conclusion is that future hair loss treatments should target the root causes of hair thinning, not just promote hair growth.

Hair grays due to oxidative stress and fewer functioning melanocytes.