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The nucleus is key in controlling skin growth and repair by coordinating signals, gene regulators, and epigenetic changes.

Human hair follicles grown in vitro maintain normal keratin patterns and structure.

Testosterone significantly affects sexual desire in both men and women, but its impact on women is more complex and influenced by psychological factors.

Perming significantly changes hair's molecular structure, while shampoo and conditioner do not.

Changes in keratin affect skin health and can lead to skin disorders like blistering diseases and psoriasis.

Changes in keratin make hair follicles stiffer.

Hard skin features like scales, feathers, and hair evolved through specific protein changes in different animal groups.

Scientists successfully created mouse hair proteins in the lab, which are stable and similar to natural hair.

Mutant CDP/Cux protein causes hair defects and reduced male fertility in mice.

Blocking 5α-reductase can harm memory and brain structure, and increase harmful brain changes in male mice used for Alzheimer's disease research.

Cyclosporin A promotes hair growth in mice and increases a protein linked to hair growth, but it may not work the same way in humans.

The skin is a complex barrier for drug penetration, but understanding its structure and interactions can improve drug delivery methods.

Pig skin is a good substitute for human skin to measure drug absorption, but differences in skin structure and enzymes across species must be considered.

Minoxidil mixed with β-cyclodextrin improves solubility and gradual release.

A specific protein in chicken embryos links early skin layers to feather development.

Removing external lipids from hair reduces moisture and increases strength, while removing internal lipids decreases water permeability.

Special nanoparticles increased skin absorption of hair loss treatments with fewer side effects.

Certain extracts from Curcuma aeruginosa Roxb. and germacrone can boost the skin's absorption of minoxidil, a hair growth promoter, making it more effective.

Ozone and procaine boost the release of healing factors in platelet-rich plasma.

The document concludes that the trichogram is a useful tool for diagnosing hair loss and suggests semi-organ cultures for practical trichological research.

Disulfide bonds in keratin fibers break more easily under stress, especially when wet, affecting fiber strength.

Disulfide bonds make keratin in hair stronger and tougher.

Curcumin can be effectively loaded into polystyrene nanoparticles, which are safe for human cells and more biocompatible with curcumin inside.

The Wnt/β-catenin pathway is important for body functions and diseases, and targeting it may treat conditions like cancer, but with safety challenges.

Root hair growth in plants is a complex process controlled by many factors working together.

Environmental factors can cause mutations in skin proteins, leading to skin disorders.

Disulfide bonds are crucial for hair's strength, especially when wet.

The PS-b-PAA copolymer nanomicelles are effective for delivering a cancer treatment drug in photodynamic therapy.

Wnt1/βcatenin signaling is crucial for heart repair after injury.

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