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Synthetic antioxidants are effective, cheap, and stable, with some like zinc and cholecalciferol reducing child and cancer deaths, but the safety of additives like BHA, BHT, TBHQ, and PEG needs more research.

MicroRNA-205 helps hair grow by changing the stiffness and contraction of hair follicle cells.

A protein called EGFR protects hair follicle stem cells, and when it's disrupted, hair follicles can be damaged, but blocking certain pathways can restore hair growth.

External factors can cause skin cancer cells that usually don't spread to grow and form tumors in mice.

The document concluded that stem cells are crucial for skin repair, regeneration, and may help in developing advanced skin substitutes.

Shrinking skin cancer increases the chance of cancer in nearby lymph nodes.

CREB, a protein that can promote cancer traits, is controlled by β-catenin in skin cancer cells.

Infrared radiation can cause skin aging and cancer at high temperatures but may have therapeutic benefits at controlled levels.

Gray hair may be caused by lower antioxidant activity in hair cells.

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.

The conclusion is that proper signaling is crucial for hair growth and development, and errors can lead to cancer or hair loss.

Some skin tumors may start from hair follicle stem cells.

Deleting Smad4 and PTEN genes in mice causes rapid, invasive stomach cancer.

EVG staining is a valuable, simple, and cost-effective method for diagnosing various skin conditions in dermatopathology.

TLR2 helps control hair growth and regeneration, and its reduction with age or obesity can impair hair growth.

Exosomes from fat-derived stem cells can potentially improve hair growth and could be a new treatment for immune-related hair loss.

The TCL1 transgenic mouse model is useful for understanding human B-cell leukemia and testing new treatments.

Rapamycin reduces skin cell growth and tumor development by affecting cell signaling in mice.

Skin cells release substances important for healing and fighting infection, and understanding these could improve skin disorder treatments.

A specific ATR gene mutation is linked to a hereditary oropharyngeal cancer syndrome.

In vivo lineage labelling is better than in vitro methods for identifying and understanding stem cells.

Understanding how epigenetic regulation affects stem cells is key to cancer insights and new treatments.

Blood tests can help understand the genetic differences in people with alopecia areata, including how severe it is and if it's inherited.

A protein called ectodysplasin-A2 increases a hair growth inhibitor in balding cells, which could be a target for hair loss treatment.

The protein EZH2 blocks microRNA-22, increasing STK40 protein, which helps hair follicle stem cells change and grow hair.

Cancer can hijack the body's cell repair system to promote tumor growth, and targeting this process may improve cancer treatments.

Patched1 helps prevent tumors by controlling cell growth.

Skin cells and certain hair follicle areas produce hemoglobin, which may help protect against oxidative stress like UV damage.

Enzymes are classified into six types and are essential for many biological processes, with only a few targeted by drugs.

The Bcl-2 protein is important for keeping hair follicle stem cells working and preventing hair loss.