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Low doses of some substances can be beneficial, while high doses can be harmful or toxic.

Lowering testosterone speeds up wound healing in male mice.

Different lab conditions and light treatment methods change how human skin cells respond to light therapy.

Type I interferons play a key role in the development of various skin diseases.

Prominin-1 expressing cells in the dermal papilla help regulate hair follicle size and communication but don't aid in skin repair.

The model suggests that scalp tension could lead to hair loss, with factors like blood vessel hardening, enlarged oil glands, and poor microcirculation also playing a role. It also hints at a possible link between skull shape and baldness pattern.

The review says skin conditions with sterile pustules need more research for better treatments.

Inflammation helps stem cells repair tissue by directing their behavior.

DHT affects bone growth by altering gene activity in osteoblasts, potentially complicating steroid use.

Rac1 is essential for proper hair structure and color.

Neuroactive steroids may affect the risk and treatment of alcohol use disorders.

Ancient hair can preserve hormones, revealing health and fertility insights.

Researchers found a new way to isolate sweat glands from the scalp for study and culture.

MicroRNAs are crucial in controlling cell signaling, affecting cancer and tissue regeneration.

Certain mature cells in mouse lungs can turn back into stem cells to aid in tissue repair.

Removing part of the vitamin D receptor stops vitamin D from working properly.

The Rotterdam Study updated its design and objectives in 2012, providing insights into various diseases in the elderly, including skin cancer, bone health, liver disease, neurological and psychiatric conditions, and respiratory issues.

Different types of stem cells exist within individual skin layers, and they can adapt to damage, transplantation, or tumor growth. These cells are regulated by their environment and genetic factors. Tumor growth is driven by expanding, genetically altered cells, not long-lived mutant stem cells. There's evidence of cancer stem cells in skin tumors. Other cells, bacteria, and genetic factors help maintain balance and contribute to disease progression. A method for growing mini organs from single cells has been developed.

Prolactin affects hair growth and skin conditions, and could be a target for new skin disease treatments.

Sensitive skin is often caused by nerve fibers and environmental factors, and can be managed with mild skincare and professional advice.

NF-κB is crucial for zebrafish heart repair, affecting heart cell growth and repair processes.

A girl with rickets and hair loss was found to have a rare condition where her body didn't respond to vitamin D treatment.

Activating Nrf2 protects human hair follicles from oxidative stress and helps prevent hair growth inhibition.

Tcf3 helps cells move and heal wounds by controlling lipocalin 2.

AMH helps estimate ovarian reserve but doesn't predict pregnancy chances; age is more important.

Androgens like testosterone affect hair growth and oil production differently across body parts and individuals.

Regenerative pharmacology, which combines drugs with regenerative medicine, shows promise for repairing damaged body parts and needs more interdisciplinary research.

RACB in barley is crucial for cell polarity and nucleus positioning, aiding fungal infection.

Live imaging has advanced our understanding of stem cell behavior and raised new research questions.

A protein called PLC2 is important for the growth and development of plant roots influenced by auxin.