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Hair growth is cyclic and influenced mainly by local factors.

Planarian regeneration begins with a specific gene activation caused by injury, essential for healing and tissue regrowth.

Stem cells help heal skin wounds by moving and changing roles, working with other cells, and needing more research on their activation and behavior.

Wnt signaling controls whether hair follicle stem cells stay inactive or regenerate hair.

Hair follicle stem cells are key for hair and skin regeneration, can be reprogrammed, and have potential therapeutic uses, but also carry a risk of cancer.

Mechanical stretching of the skin can promote hair growth by activating certain immune cells.

Latanoprost can make eyelashes longer, thicker, and darker.

Macrophages help regrow hair by activating stem cells using AKT/β-catenin and TNF.

A wearable device using electric stimulation can significantly improve hair growth.

Progress has been made in skin and nerve regeneration, but more research is needed to improve methods and ensure safety.

Products should be called 'sperm-safe' only after thorough, well-designed tests.

Stem cell niches are adaptable and key for tissue maintenance and repair.

The origins of many adult skin stem cells are still mostly unknown.

Injection lipolysis effectively reduces small fat deposits and should be done with care and proper patient selection.

Peptide hydrogel scaffolds help grow new hair follicles using stem cells.

Bird scales evolved from feathers, not reptile scales.

New sulfur-containing steroid analogs show promise for more targeted medical treatments.

Researchers created a new mouse model for studying Citrullinemia Type I and similar conditions, showing symptoms and treatment responses like those in humans.

The study concluded that scalp tumors show different patterns based on age, gender, and tumor thickness, and emphasized the importance of early detection and scalp examinations.

Platelet-Rich Plasma (PRP) shows promise for treating various skin conditions, but more research is needed to standardize its use.

Two specific hair keratin genes are active during hair growth and decline as hair transitions to rest.

Frontal fibrosing alopecia can cause sudden hair loss on limbs, similar to scalp hair loss.

Acne is significantly influenced by genetics, and understanding its genetic basis could lead to better, targeted treatments.

Researchers found new genes involved in hair growth, which could help develop new hair treatments.

Microneedling is a safe and effective way to improve various skin conditions with minimal side effects.

A boy with chromosome 13q deletion syndrome developed eye cancer, a woman with breast cancer lost vision due to a rare side-effect of her treatment, a man's vision worsened after using a hair loss drug, and two rare disorders were discussed. Optical Coherence Tomography is useful for diagnosing and monitoring these conditions.

Poplar seed hairs grow from the placenta at the ovary base, with endoreduplication playing a key role in their development, and share similar cellulose synthesis processes with cotton fibers.

Eye exams are crucial for kids with 13q deletion syndrome, tamoxifen can cause vision loss, Propecia may lead to cataracts, Lipoid Proteinosis causes skin bumps, and OCT is useful for diagnosing macular diseases.

The conclusion is that skin and hair patterns are formed by a mix of cell activities, molecular signals, and environmental factors.

Dermal-epidermal interactions are crucial for hair growth and maintenance.