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Hair gets thinner, grayer, and changes texture with age due to genetics, environment, and cellular changes, affecting the growth cycle.

Decreased CD200 in hair follicles may cause immune issues in some alopecia areata cases.

New treatments for hair loss may target specific pathways and generate new hair follicles.

Platelet-rich plasma injections significantly improve hair density and thickness in both male and female pattern hair loss, especially in early stages.

Dermoscopy is a good, noninvasive way to see normal cat skin structures and could be useful for check-ups.

Nonscarring alopecia has higher hair density than scarring alopecia, and hair density can help diagnose the type of alopecia.

Transverse scalp sections are better for diagnosing non-scarring hair loss, while vertical sections are better for a specific scarring hair loss called lichen planopilaris.

The hair follicle bulge is an important area for adult stem cells involved in hair growth and repair, with potential for medical use needing more research.

Human hair follicles can regenerate and recover after severe injury by going through a brief abnormal resting phase before growing again.

Follicular Unit Transplantation is an effective and safe treatment for hair loss due to scarring.

A 66-year-old man with a rare case of male frontal fibrosing alopecia did not regrow hair despite treatment.

Follicular unit hair transplantation is the standard method for natural-looking hair restoration in androgenic alopecia.

Stem cells can help regenerate hair follicles.

The article concludes that hair loss is a common side effect of drugs treating skin cancer by blocking the hedgehog pathway, but treatment should continue, and more selective drugs might prevent this side effect.

Canine epidermal neural crest stem cells could be a promising treatment for spinal cord injuries in dogs.

The conclusion is that accurate diagnosis of different types of hair loss requires careful examination of tissue samples and understanding of clinical symptoms.

Topical melatonin and brushing did not affect hair regrowth in Siberian Huskies.

Injury changes how hair follicle stem cells behave, depending on the hair growth stage.

New treatments and early diagnosis methods for permanent hair loss due to scar tissue are important for managing its psychological effects.

Hair follicles are essential for skin health, aiding in hair growth, wound healing, and immune function.

Injecting a mix of human skin and hair cells into mice can grow new hair.

Gene regulation could revolutionize hair color by altering pigmentation from within.

Parathyroid hormones are important for hair growth, but their use in treating hair loss from chemotherapy is still uncertain.

HIV-1 may cause increased stem cell death in hair follicles, leading to hair loss.

The study suggests computer-assisted analysis of scalp biopsies could improve hair loss diagnosis but needs more validation.

Deleting the Far2 gene in mice causes sebaceous gland issues and patchy hair loss.

Hair follicle damage happens during hair transplants and can impact success; better surgical methods are needed.

Sebaceous glands in male pattern hair loss patients have more lobules and might cause early hair growth phase shifts.

Human placental extract and minoxidil together significantly promote hair growth.

The conclusion is that teeth, hair, and claws have similar stem cell niches, which are important for growth and repair, and more research is needed on their regulation and potential markers.