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Horizontal scalp biopsy sections are better for diagnosing alopecia areata, showing fewer hair follicles and more miniaturized hairs.

Understanding hair follicle anatomy helps diagnose hair disorders.

Young men with male pattern baldness lose hair density over time without treatment.

Alopecia areata may appear differently depending on the individual's type of hair loss and scalp condition.

pH, calcium, and reactive oxygen species regulate plant cell growth, with key roles for NADPH oxidases and plasma membrane H+-ATPases.

Most hair loss in children is caused by a few common conditions, and it's important to diagnose these properly and support the child's mental health.

Viviscal may modestly improve hair loss in women without adverse effects.

Androgens can cause hair growth in some areas and hair loss on the scalp.

Male hormones are important for hair and oil gland development and can cause conditions like excessive hair growth and acne.

Topical vitamin D3 does not prevent hair loss from chemotherapy.

Hair loss in secondary syphilis is more common than thought and can be reversed with antibiotics.

The document explains how to identify different hair problems using a microscope.

Mini-micrografting in hair transplants can give similar density to older methods with fewer sessions.

17α-estradiol is a safe estrogen that might protect the brain and doesn't cause feminization, needing more research for treating brain diseases.

Chemotherapy causes hair loss starting soon after treatment begins and recovers about 3 months after ending, while tamoxifen does not significantly affect hair growth.

People with X-linked hypohidrotic ectodermal dysplasia have no sweat ducts and less, thinner hair.

The document concludes that the trichogram is a useful tool for diagnosing hair loss and suggests semi-organ cultures for practical trichological research.

Chitosan slows root hair growth and causes a buildup of callose at low concentrations, but at high concentrations, it only inhibits growth without callose buildup.

pH changes are crucial for root hair growth because they affect enzymes and proteins that control the cell wall and growth.

The photographic method for measuring facial hair density is reliable and valid but needs further testing on different hair densities and skin colors.

The SYP123-VAMP727 complex is important for transporting materials that harden the root hair shank in Arabidopsis.

AGD1 is important for root hair development in Arabidopsis, working with phosphoinositide signaling and the actin cytoskeleton.

Minoxidil helps grow longer, thicker hair in bald scalps of stumptailed macaques, and early treatment is more effective.

A new hair transplant method combines individual and group follicles for better results and efficiency.

A hair restoration technique was introduced that mixes different types of hair groupings to reduce procedure time, limit damage, and potentially increase hair density, suggesting more hair can be transplanted than previously thought.

The document recommends careful planning and techniques for successful punch hair grafting in hair restoration.

AXR3 and SHY2 genes control the growth and timing of root hair development in plants.

The document concludes that topical minoxidil therapy is safe and effective in promoting hair growth for male pattern baldness.

The 3D skin model is better for hair growth research and testing treatments.

Hair transplants using follicular unit grafting can significantly improve appearance for men with advanced hair loss.