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Measuring reproductive hormones in brown bear hair could help identify their sex and reproductive state, but better collection methods or lab techniques are needed.

Hair grafting is a key method for improving scars, especially in areas with hair, by transplanting hair to hide the scar while maintaining its original characteristics.

GRK2 is essential for healthy hair follicle function, and its absence can lead to hair loss and cysts.

PCOS is a common hormonal disorder with symptoms like irregular periods and excess hair growth, managed with lifestyle changes and medications.

Female pattern hair loss shows similar characteristics in both genders and should be classified by hair loss patterns, not gender.

Minoxidil helps some bald men, but most lose hair again when stopping.

Chicken feather gene mutation helps understand human hair disorders.

Researchers found genes that control hair color and growth change before the visible coat color changes in snowshoe hares.

Sebum production varies by individual and is influenced by age, gender, and hormones, affecting skin and hair health.

Nude mice with grafted human skin developed scars similar to human hypertrophic scars.

Scalp expansion is an effective way to reconstruct the scalp with good cosmetic outcomes.

B2m-free HLA variants may be a new class of HLA important in immune responses and diseases.

Microneedles are effective for painless drug delivery and promoting wound healing and tissue regeneration.

Genetically modified stem cells from human hair follicles can lower blood sugar and increase survival in diabetic mice.

Fat stem cells from diabetic mice can help heal skin wounds in other diabetic mice.

MILL molecules are unique immune proteins in mice that don't need TAP to appear on cell surfaces.

Laser ablation ICP-MS is effective for tracking trace elements in polar bear hair over time.

Dermoscopy is a useful tool for identifying features of skin conditions, but more research is needed to define its role in dermatology.

Children's hairlines change shape as they grow, with women often developing a widow's peak and men's hairlines becoming more convex and possibly balding at the temples, influenced by genetics and hormones.

Elephant tusks and hair reveal seasonal diet and climate changes.

Blocking interferon-gamma might help treat various autoimmune diseases.

The tropical legume Sesbania rostrata can form nodules in waterlogged conditions using a different method that involves plant hormones and specific genes.

Chicken feather growth involves specific genes and shares similarities with hair development.

Rats can't grow new hair follicles after skin wounds, unlike mice, due to differences in gene expression and response to WNT signaling.

Fingerprints form uniquely before birth due to specific genetic pathways and local signals.

Mesenchymal Stem/Stromal Cells (MSCs) help in wound healing and tissue regeneration, but can also contribute to tumor growth. They show promise in treating chronic wounds and certain burns, but their full healing mechanisms and potential challenges need further exploration.

Hoxc genes control hair growth through Wnt signaling.

The Scalp Coverage Scoring method reliably measures hair density from images.

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

Skin grafts on mice can cause an immune response leading to hair loss, useful for studying human hair loss conditions.