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A genetic hair protein variant is more common in Japanese people and is inherited.

The study showed that a specific DNA sequence can control gene expression in hair growth areas of mice.

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

The UHS promoter is specific to mouse hair follicles.

The study found that variations in hair protein genes are likely due to evolutionary deletions or duplications.

The B2C promoter works in sheep cells but not in mouse embryos.

Applying L-methionine and L-serine to the skin promotes the most hair growth.

Hair and wool have complex microscopic structures with microfibrils and varying cystine content.

Alopecia mucinosa is a challenging condition with unclear diagnosis and treatment.

Trichothiodystrophy is a condition with brittle hair and various physical and mental issues due to low sulfur in proteins.

TTD hair is brittle due to fewer sulfur amino acids and unstable disulfide bonds.

A rare case of isolated trichothiodystrophy was identified, marked by brittle hair with low sulfur content.

Trichothiodystrophy involves brittle hair due to low sulfur amino acids, not a transport defect.

Hair treatments cause significant structural changes, especially with excessive heat, regardless of ethnicity.

Prenatal diagnosis of trichothiodystrophy is possible in the second trimester using fetal eyebrow biopsy, with sulfur content analysis being more reliable.

A new method accurately measures lead levels in hair to assess exposure.

Hair coloring increases copper and calcium uptake, damaging hair and reducing shine.

The patient's hair had unique damage and a lower sulfur-to-nitrogen ratio compared to relatives, but not compared to healthy controls.

Trace elements like calcium, iron, and zinc are unevenly distributed in hair, while sulfur is even, and increased phosphorus and potassium levels are linked to skin reactions.

A rare case of trichothiodystrophy was found with autism, seizures, and mental retardation.

TTD patients don't have a higher skin cancer risk because their main issue is with transcription, not DNA repair.

The study suggests silicon might be important for healthy hair, as less silicon was found in people with hair loss.

PIXE is an effective method to analyze hair's elemental composition.

Tay syndrome is a unique genetic disorder causing skin, hair, and developmental issues.