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Cat claws stay sharp by shedding their outer layer through microcracks formed during activities.

Reflectance confocal microscopy can tell apart white dots on the scalp as either sweat gland ducts or hair follicle openings.

Wnt5a may contribute to psoriasis by reducing skin cell growth, blocking skin cell maturation, and increasing inflammation.

Current therapies cannot fully regenerate adult skin without scars; more research is needed for scar-free healing.

Fish oil improves skin health in people with diabetes and high cholesterol.

Dermatologists should customize cosmetic treatments for dark-skinned patients to minimize risks and complications.

Vitamin D3 affects cell differentiation in specific skin areas.

α3β1-integrin is crucial for maintaining normal hair follicle shape and function but not needed for the development of the surrounding skin.

Adding hyaluronic acid helps create larger artificial hair follicles in the lab.

Ethosomes improve drug delivery through the skin but may have side effects like irritation.

Scientists created keratinocyte cell lines from human hair that can differentiate similarly to normal skin cells, offering a new way to study skin biology and diseases.

The cornified envelope is crucial for skin's barrier function and involves key proteins and genetic factors.

New findings suggest potential treatments for melanoma, hyperpigmentation, hair defects, and multiple sclerosis, and show skin microbiome changes don't cause atopic dermatitis.

The skin has a complex immune system that is essential for protection and healing, requiring more research for better wound treatment.

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.

Researchers developed a nanomedicine for acne treatment that delivers medication with less irritation and is non-irritating for oily skin.

Hair in mammals likely evolved from glandular structures, not scales.

The patch assay can create mature hair follicles from human cells and may help in hair loss treatments.

Printing human stem cells and a special matrix during surgery can help grow new skin and hair-like structures in rats.

Electrospun matrices help regenerate skin and hair follicles using PCL and collagen scaffolds.

Immune cells are essential for early hair and skin development and healing.

Human stem cells were turned into cells similar to those that help grow hair and showed potential for hair follicle formation.

Centrosomes are essential for healthy skin and hair growth, and their role is different from that of cilia.

The CUBIC protocol allows detailed 3D visualization of proteins in mouse skin biopsies.

Neuregulin3 affects cell development in the skin and mammary glands.

Scaffoldin helps form hard skin structures in chicken embryos.

Skin cysts might help advance stem cell treatments to repair skin.

Human foreskin does not show aging or reduced cell growth after radiation, and H2A.J is not a good marker for radiation-induced aging.

Adult mouse skin contains stem cells that can create new hair, skin, and oil glands.

The document concludes that the hair cycle is a complex process involving growth, regression, and rest phases, regulated by various molecular signals.