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Hair follicles are complex, dynamic mini-organs that help us understand cell growth, death, migration, and differentiation, as well as tissue regeneration and tumor biology.

Hair cortisol levels can show increased stress during late pregnancy but only for up to six months.

Hair follicle development is controlled by interactions between skin tissues and specific molecular signals.

The Rotterdam Study updated findings on elderly health, focusing on heart disease, genetics, lifestyle effects, and disease understanding.

Auxin and ethylene hormones both work together and against each other to control plant growth.

The nanofibers with two growth factors improved wound healing by supporting structure, preventing infection, and aiding tissue growth.

The Rotterdam Study found risk factors for elderly diseases, links between lifestyle and genetics with health conditions, and aimed to explore new areas like DNA methylation and sensory input effects on brain function.

Microspheres about 1.5 micrometers in size can best penetrate hair follicles, potentially reaching important stem cells.

The conclusion is that certain cell interactions and signals are crucial for hair growth and regeneration.

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

Zinc oxide nanoparticles in sunscreen do not penetrate deep into the skin.

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.

Future hair loss treatments should aim to extend hair growth, reactivate resting follicles, reverse shrinkage, and possibly create new follicles, with gene therapy showing promise.

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

The Rotterdam Study aims to understand various diseases in older adults.

Hair follicles help absorb and store topical compounds, aiding targeted drug delivery.

Noggin is necessary to start the hair growth phase in skin after birth.

The Multi-Organ-Chip improves the growth and quality of skin and hair in the lab, potentially replacing animal testing.

Skin needs dermal β-catenin activity for hair growth and skin cell multiplication.

Laser hair removal is the most requested cosmetic procedure and has become a scientifically-based treatment suitable for all skin types.

Overexpression of activin A in mice skin causes skin thickening, fibrosis, and improved wound healing.

Artificial skin development has challenges, but new materials and understanding cell behavior could improve tissue repair. Also, certain growth factors and hydrogel technology show promise for advanced skin replacement therapies.

Calcium affects where root hairs grow, but other unknown factors determine their growth direction.

The virus was not found in the semen and urine of a man who tested positive for COVID-19.

Dermatologists need to understand hair products to treat hair and scalp issues better.

The document concludes that developing generic topical drugs requires ensuring they match the original in quality, composition, and structure, and often involves complex testing and regulatory steps.

Epidermal stem cells are diverse and vary in activity, playing key roles in skin maintenance and repair.

Fibromodulin might help reduce scarring if increased in adult wounds like in fetal skin that heals without scars.

Scientists made working salivary glands in mice using bioengineered cells, which could help treat dry mouth.

Stem cell niches support, regulate, and coordinate stem cell functions.