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The reviews critique three psychology books, noting skepticism about a personality inventory for teens, praising a practical guide on body image issues, and recommending a book on grief therapy.

Ziehl-Neelsen's stain helps identify different parts of hair in sheep and goats.

Arrector pili muscle regulates hair follicle stem cells, DNA methylation needed for hair cycling, and Wnt/B-catenin signaling starts hair growth.

Fiber implants effectively treat permanent hair loss with few complications.

The guideline suggests using specific criteria to diagnose PCOS, recommends various treatments for its symptoms, and advises screening for related health issues.

Finasteride reduces urinary issues and surgery need in men with enlarged prostates by over 50%.

The guideline recommends mental health involvement in diagnosing gender identity disorder and outlines hormone and surgical treatment protocols, emphasizing safety, informed consent, and long-term monitoring.

Method detects finasteride in plasma at very low concentrations.

People with hair loss have more androgen receptors and enzymes in certain follicles, with men and women showing different patterns.

Metformin helps with menstrual cycles and insulin levels in PCOS but is less effective for hair growth, diabetes prevention, and weight loss, and may improve fertility and reduce diabetes risk.

Microspheres about 1.5 micrometers in size can best penetrate hair follicles, potentially reaching important stem cells.

Polysaccharides have many health benefits and are used in drugs, but isolating and purifying them is complex and requires careful methods.

The modified Ferriman-Gallwey method is a useful tool for diagnosing hirsutism.

Chemicals and body size might change when puberty starts and progresses, but more research is needed to confirm this.

The Endocrine Society advised against routine testosterone therapy for women, citing a need for more research on long-term safety and a clear definition of androgen deficiency.

Polymeric nanoparticles show promise for treating skin diseases.

Mutations in the SRD5A3 gene cause a new type of glycosylation disorder by blocking the production of a molecule necessary for protein glycosylation.

The guidelines advise against using testosterone and DHEA in women for most conditions due to safety and effectiveness concerns, but suggest considering testosterone for postmenopausal women with low sexual desire.

Hair loss and aging are caused by the breakdown of a key protein in hair stem cells.

Chitin and chitosan are useful in cosmetics for oral care, haircare, and skincare, including UV protection and strength improvement.

Acne affects most teenagers and can continue into adulthood, with various treatments available that show improvement but have concerns like antibiotic resistance and side effects.

About 7% to 15% of Iranian women have polycystic ovary syndrome, depending on the criteria used to diagnose it.

Laser hair removal is the most requested cosmetic procedure and has become a scientifically-based treatment suitable for all skin types.

A gene called APCDD1, which controls hair growth, is found to be faulty in a type of hair loss called hereditary hypotrichosis simplex.

Use minoxidil for hair loss; finasteride and dutasteride for men, dutasteride for women.

The ZIP7 gene helps control zinc levels in cells by moving zinc from the Golgi apparatus to the cytoplasm.

Fungi-produced compounds can change plant root growth.

Hair follicle development and microbes help regulatory T cells gather in newborn skin.

Hair follicle stem cells use specific chromatin changes to control their growth and differentiation.

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