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Wounds on the face usually heal with scars, but understanding how some wounds heal without scars could lead to better treatments.

Fish teeth and taste bud densities are linked and can change between types due to shared genetic and molecular factors.

The skin protects the body, regulates temperature, senses touch, and makes vitamin D.

Hair is a complex organ, and understanding its detailed structure and growth phases is crucial for analyzing substances within it.

AP-2α and AP-2β proteins are essential for healthy adult skin and hair.

Ezh2 controls skin development by balancing signals for dermal and epidermal growth.

Vimentin and transthyretin proteins are linked to black coat color in sheep.

The human scalp hair bulb contains different types of melanocytes with varying abilities to produce melanin.

Genetic changes in mice help understand skin and hair disorders, aiding treatment development for acne and hair loss.

Bmpr2 and Acvr2a receptors are crucial for hair retention and color.

Eyelid cells share signaling components but differ in pathway activity.

Environmental pollutants can damage hair health and cause hair loss.

Gene network oscillations inside hair stem cells are key for hair growth regulation and could help treat hair loss.

Skin health and repair depend on the signals between skin stem cells and their surrounding cells.

Epidermal stem cells create and maintain skin structures like hair and nails through specific signaling pathways and vary by location and function.

SCDSFs from zebrafish embryos are beneficial for treating cancer, regenerating tissues, and improving conditions like psoriasis and alopecia.

MSC-derived exosomes can help treat COVID-19, hair loss, skin aging, and arthritis.

Wnt signaling is crucial for pigmented hair regeneration by controlling stem cell activation and differentiation.

Certain transcription factors are key in controlling skin stem cell behavior and could impact future treatments for skin repair and hair loss.

Hair loss in Androgenetic alopecia (AGA) is due to altered cell sensitivity to hormones, not increased hormone levels. Hair growth periods shorten over time, causing hair to become thinner and shorter. This is linked to miscommunication between cell pathways in hair follicles. There's also a change in gene expression related to blood vessels and cell growth in balding hair follicles. The exact molecular causes of AGA are still unclear.

The research found ways to activate melanocyte stem cells for potential treatment of skin depigmentation conditions.

The document concludes that while some organisms can regenerate body parts, mammals generally cannot, and cancer progression is complex, involving mutations rather than a strict stem cell hierarchy.

Radiation mainly affects keratinocyte stem cells, not melanocyte stem cells, causing hair to gray.

Lizards can regrow their tails, and studying this process helps understand scar-free healing and limb regeneration.

Melanocyte precursors in human fetal skin follow a specific migration pattern and some remain in the skin's deeper layers.

Tiny particles called extracellular vesicles could help with skin healing and hair growth, but more research is needed.

Alternative treatments show promise for hair growth beyond traditional methods.

Understanding gene expression in hair follicles can reveal insights into hair growth and disorders.

Different types of fibroblasts play various roles in diseases and healing, and more research on them could improve treatments.

Melanocyte stem cells in hair follicles are key for hair color and could help treat greying and pigment disorders.