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K25, K27, and K28 are found in all inner root sheath layers of hair, while K26 is only in the cuticle.

Trichohyalin in sheep hair follicles may help with structure and calcium binding.

PAD enzymes play a key role in hair growth and structure.

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

Type II keratin genes are crucial for hair follicle differentiation and have a conserved structure and expression pattern.

Arginine converts to citrulline in hair follicles as proteins harden.

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

Hair has unevenly distributed proteins and lipids, with lipids mainly in the cuticle and proteins in the cortex and medulla.

Two specific genes are more active during hair growth in mice.

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

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

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

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.

Alopecic hair has more irregular structures and chemical changes than normal hair, reducing its strength.

Rac1 is essential for proper hair structure and color.

Hair proteins change location and structure as hair cells mature.

Different S100 proteins have specific roles in various parts of the hair follicle.

The evolution of mammal body hair remains a mystery.

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

Calcium soaps are present in human hair and can be removed with acid.

Hair follicles and sweat glands show different keratin staining patterns.

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.

Trichohyalin and peptidylarginine deiminase type III are found together in rat hair follicles, with trichohyalin being modified after expression.

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

A new method effectively stains hair samples for study without losing hair sections.

Straight permed hair loses weight faster than virgin hair when heated, but ends up heavier after burning.