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Hair follicle size is mainly influenced by the number of cells and extracellular matrix volume, with cell number having a larger impact.

Keratin expression reflects cell organization and differentiation, not causes it.

Understanding hair follicle anatomy helps diagnose hair disorders.

Mice hair growth patterns get more complex with age and can change with events like pregnancy or injury.

Hair grows faster in the morning and is more vulnerable to damage from radiation due to the internal clock in hair follicle cells.

EGFR is essential for normal hair development and follicle differentiation.

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

The 190-kbp domain contains all human type I hair keratin genes, showing their organization and evolution.

Prolactin affects the production of different keratins in human hair, which could lead to new treatments for skin and hair disorders.

Hair growth can be stimulated by combining certain skin cells, which can rejuvenate old cells and cause them to specialize in hair follicle creation.

Prolactin slows down hair growth in mice.

Prolactin may play a significant role in skin and hair health and could be a target for treating skin and hair disorders.

PPAR alpha may help in hair growth and could be a target for treatment.

Premature graying of hair may suggest health issues and currently lacks effective treatments.

Ludwig pattern hair loss in women results from varying sensitivity in hair follicles, causing fewer visible hairs.

Goat reproductive activity and coat growth are affected by light and temperature, with temperature altering prolactin levels and hair growth, but not melatonin or estrus onset.

Activins and follistatins, part of the TGFβ family, are crucial for hair follicle development and skin health, affecting growth, repair, and the hair cycle.

Hormones during pregnancy and lactation keep skin stem cells inactive, preventing hair growth.

FA2H is essential for normal fur and sebum production in mice.

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

A long-acting Vitamin C derivative helps hair grow by stimulating cells and increasing growth factors.

IGF-1 increases whisker growth in transgenic mice.

Ocu-miR-205 helps control hair growth in Rex rabbits by affecting cell processes and signaling pathways.

Rice bran extract can potentially treat hair loss by promoting hair growth and increasing the number of hair follicles.

Reducing Tyrosinase prevents mature color pigment cells from forming in mouse hair.

Hair follicle traits at 6 months can help select cashmere goats for breeding.

Lupus can look like hair loss from alopecia areata but needs different treatment.

Researchers isolated and identified structural components of human hair follicles, providing a model for studying hair formation.

Ancient Chinese goats evolved cashmere-producing traits due to selective breeding, particularly in genes affecting hair growth.

Bioengineering can potentially treat hair loss by regenerating hair follicles and cloning hair, but the process is complex and needs more research.