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The genes KRT25 and SP6 affect curly hair in horses, with KRT25 also causing hair loss. If both genes are mutated, the horse gets curly hair and hair loss. KRT25 can hide the effect of SP6.

Scientists are still unsure what triggers the immune system to attack hair follicles in Alopecia areata.

Human hair medulla doesn't break down hydrogen peroxide, which may affect hair color formation.

The medulla in Asian scalp hair has a tubular structure that allows ions and large molecules to flow through it.

Hair follicle cells become four types: medulla, cortex, cuticle, and inner root sheath.

High-resolution x-ray images showed three main structures in human hair: medulla, cortex, and cuticle.

Msx2 and Foxn1 are both crucial for hair growth and health.

Infrared and Raman imaging can non-destructively analyze hair structure and help diagnose hair conditions.

Guinea-pig hair and follicle proteins are mostly similar, but follicles have more group 2 proteins and fewer group 3 and 4 proteins.

Bubble hair deformity may be caused by hair shaft trauma and can improve with gentle hair care.

Some mutant mice have hair with abnormal cross-linking, mainly in the cuticle, not affecting other hair parts.

Lipids are crucial for healthy hair, protecting it from damage and breakage.

Oxidative hair dye changes hair color and structure but doesn't weaken it.

A more sensitive assay was developed to detect enzyme activity converting arginine to citrulline in hair follicles.

As sheep age, their hair fibers and follicles grow larger and more organized, with no significant differences between males and females.

X-ray microscopy can non-invasively show hair structure changes after treatments, but it's less detailed than TEM and needs improvement.

Heating human hair creates hollow microtubes with smooth surfaces.

Hair analysis can detect drug use but is costly and interpretation is complex.

Hair growth is driven by cells that move and change like a conveyor belt.

Horse skin has a layered epidermis, a dermis with hair follicles, sweat and sebaceous glands, and is supplied by small arteries.

Hair fibers degrade and change color in very basic water.

Otter rabbit, mink, and blue fox fur can be identified by their unique hair structures.

Two mouse mutants have defective hair cuticle cross-linking.

Different women's hair and skin glands respond to hormones in varied ways, which can cause unwanted hair growth even with normal hormone levels, and more research is needed to treat this effectively.

Trichohyalin, a hair follicle protein, has a part with repeating patterns of 23 amino acids.

The fuzzy gene is crucial for controlling hair growth cycles.

Mammal hairs have different internal structures.

Sex hormones affect reproduction, sexual development, and oral health, and it's important for dental practitioners to understand their effects and interactions.

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