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The conclusion is that substances can penetrate hair fibers through multiple pathways, including both the cell membrane complex and the non-keratinous parts.

Human head hair proteins can be typed into eight distinct patterns, useful for genetic and forensic investigations.

Researchers found genes for cysteine-rich proteins that form the protective layer of hair in humans and sheep.

Hair and wool have diverse keratins and keratin-associated proteins.

Hair growth is controlled by specific gene clusters and proteins, and cysteine affects hair gene expression in sheep.

The study found that minor protein differences between curved and straight Japanese hair are unlikely to significantly affect hair structure.

Understanding wool keratin-associated proteins in sheep can help improve wool quality through selective breeding.

The B2 genes are crucial for hair growth in rats.

Sheep and goat hair fibers are complex due to keratin-associated proteins, which are important for fiber properties and growth.

Feed restriction in sheep leads to finer wool fibers but may reduce wool quality.

Human hair keratin genes are similar to mouse genes and are specifically expressed in hair follicles.

The document explains how hair is studied in forensics to identify its source and its role in criminal investigations.

Lab-grown nail cells show characteristics similar to natural nail and hair.

Understanding hair biology is key to developing better treatments for hair and scalp issues.

Human hair protein extracts can protect skin cells from oxidative stress.

The research shows that a gene called Wnt3 affects hair growth and structure, causing short hair and balding when overactive.

Frequent hair coloring and styling can damage hair and cause breakage or loss.

Hair dyes can change hair color temporarily or permanently but may cause side effects like skin reactions and hair damage.

Certain gene mutations are linked to wool quality in sheep and could help in breeding for better wool.

Genetic variation in the KRTAP15-1 gene affects wool yield in sheep.

The PCR technique can identify genetic differences in a wool-related gene among different sheep breeds, which may help improve wool and pelt quality.

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

The new anti-dandruff shampoo with ketoconazole-coated zinc oxide nanoparticles is more effective against dandruff.

Biotin helps regulate proteins in the blood, which may explain its role in hair growth.

The 3D structure of a key hair protein was modeled, revealing specific helical structures and stabilization features.

Keratin proteins are crucial for hair growth and structure.

The article concludes that the wool follicle is a valuable model for studying tissue interactions and has potential for genetic improvements in wool production.

Children are at risk of health issues from exposure to platinum group elements from car exhausts.

Understanding normal hair growth and loss in children is key to diagnosing and treating hair disorders.

Some skin conditions are associated with other serious diseases, and office microscopy may miss many fungal infections.