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Prdm1 is necessary for early whisker development in mice but not for other hair, and its absence changes nerve and brain patterns related to whiskers.

Researchers extracted tiny keratin filaments from human hair by unzipping its outer layer.

Confocal microscopy is better than scanning electron microscopy for studying hair in its natural state and understanding hair products' effects.

Neonate scalp hair is thinner, lacks a medulla, and has smaller follicles compared to adult hair.

Rac1 is essential for proper hair structure and color.

Lambs fed a liquid diet showed abnormal wool and skin, which improved with more B-vitamins, suggesting a link to B-vitamin deficiency.

Bleaching hair increases cysteic acid levels in a predictable way.

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

TGF-alpha is present in sheep and ferret skin and may affect hair growth without directly stimulating cell proliferation.

Hair and nail cells share similar proteins, indicating a common differentiation pathway.

K6hf is a unique protein found only in a specific layer of hair follicles.

Trichohyalin is also found in the outer layers of normal human skin.

Human hair has a protective lipid layer that can be damaged by moisture and treatments, affecting hair growth and health.

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

The Cell Membrane Complex in hair has both water-attracting and water-repelling layers.

A new keratin, hK6irs1, is found in all layers of the hair follicle's inner root sheath.

S100A3 protein is crucial for hair shaft formation in mice.

Researchers found a new gene, hacl-1, that is active in mouse hair follicles during hair growth and may be important for hair biology.

Involucrin helps strengthen the inner parts of human hair.

Ziehl-Neelsen's stain helps identify different parts of hair in sheep and goats.

Vitamin D receptor is crucial for starting hair growth after birth.

Blocking Wnt signaling in young mice causes thymus shrinkage and cell loss, but recovery is possible when the block is removed.

Eph/ephrin signaling is important for skin cell behavior and could be targeted to treat skin diseases.

Moisture content significantly affects how human hair breaks.

Two specific hair keratin genes are active during hair growth and decline as hair transitions to rest.

Modified keratin binds better to hair, especially bleached hair.

Corkscrew and cigarette-ash-shaped hairs in tinea capitis are caused by internal hair degradation and external resistance.

The research found that postmortem root bands in hair are likely caused by the breakdown of a specific part of the hair's inner structure after death.

Melanin density affects hair color, and this method can help in cosmetic assessments and diagnosing hair diseases.

The skin has about 230,000 touch-sensitive nerve fibers, with high concentrations in the hands and face.