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Stem cell self-renewal is complex and needs more research for full understanding.

Human dermal fibroblasts are the main cells targeted by a virus that can cause a deadly skin cancer, and a certain inhibitor can effectively block this infection.

Macrophages help heal nerves by aiding the maturation of Schwann cells and are important for nerve repair.

New single-cell analysis techniques are improving our understanding of stem cells and could help in treating diseases.

Androgens can both stimulate and cause hair loss, and understanding their effects is key to treating hair disorders.

Different soft tissue fillers can cause various skin reactions; biodegradable fillers are safer and non-biodegradable ones like silicone can lead to long-term problems.

Air pollution (PM10) increases skin inflammation and aging by reducing collagen and may trigger a repair response in skin cells.

Estrogens generally inhibit hair growth and improve skin quality, but their exact effects on hair follicles are complex and not fully understood.

Human amniotic membrane helps heal skin wounds faster and with less scarring.

Panax ginseng extract helps mice grow hair.

CRAC channels are crucial for the development and function of specialized immune cells, preventing severe inflammation and autoimmune diseases.

Claudin-1 is important for the barrier function and growth of hair.

Different species and human skin models vary in their skin enzyme activities, with pig skin and some models closely matching human skin, useful for safety assessments and understanding the skin's protective roles.

DHT's role in hair loss is important, but measuring its level for diagnosis is questionable.

Neuroactive steroids could become safe, effective treatments with more understanding of their complex brain actions and metabolism.

Researchers created early-stage hair-like structures from skin cells, showing how these cells can self-organize, but more is needed for complete hair growth.

Sinapic acid may help hair growth by activating a specific cell pathway.

PCOS may start before birth, involves metabolic issues, and can be treated with drugs like metformin and lifestyle changes.

Thyroid diseases may contribute to autoimmune skin diseases, and more research is needed on their relationship.

Changing light exposure can affect hair growth timing in goats, possibly due to a key gene, CSDC2.

Pseudomonas sp. T5-6-I bacteria increase selenium uptake in Brassica oleracea plants by 130%.

Mesenchymal stromal cells may help treat severe COVID-19, but more research is needed to confirm their effectiveness.

Obesity increases the risk of skin infections, inflammatory conditions, and melanoma, but not basal cell carcinoma.

Most treatments for spondyloarthritis are safe, but monitoring and careful selection based on patient risks are important.

Micro-current stimulation may promote hair growth more effectively than standard treatments.

Vitamin D and calcium are important for quick and effective skin wound healing.

Using micro skin tissue columns improves skin wound healing and reduces scarring.

The document concludes that hormonal biomarkers are key for diagnosing hyperandrogenemia in women and hypogonadism in men.

Sex hormones, especially estradiol, can change chicken feather shapes and colors.

Nail stem cells and Wnt signaling are important for fingertip regeneration but not sufficient for regenerating more complex limb structures.