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Treatment during development affects hormone balance and sexual behavior in male rats.

Metallothionein likely helps in cell growth and development in wool follicles of fetal sheep.

Researchers developed a new model for more realistic computer graphics rendering of hair by considering how light scatters on hair fibers.

Dermatoscopy and videodermatoscopy are useful for diagnosing and monitoring various skin, hair, and nail conditions.

Different types of androgens bind differently to two receptors, AR1 and AR2, in Atlantic croaker's brain and ovarian tissues, suggesting these receptors may control different androgen actions in fish.

Hair follicles in the back of the rosette fancy mouse have reversed orientations due to a gene mutation.

The compound 4c showed strong potential as an anticancer agent.

Lotion with fucoidan from brown seaweed improved skin and reduced allergy symptoms in mice with dermatitis.

Light scatters differently from elliptical hair fibers than from circular ones, and a new model better predicts this behavior, especially for shiny highlights.

PDRN, derived from salmon sperm, shows promise in healing wounds, reducing inflammation, and regenerating tissues, but more research is needed to understand its mechanisms and improve its use.

Nonshaven follicular unit extraction is a good hair transplant option that doesn't require shaving and can transplant up to 3000 grafts daily.

Finasteride harms invertebrates' survival and burial ability.

The enzymes 5α-reductase and 3α/β-hydroxysteroid oxidoreductase help create brain-active substances from progesterone and testosterone, which could be used for treatment, but more research is needed to ensure their safety and effectiveness.

Thyroid hormones and androgens affect gene expression in frog reproductive organs differently between males and females.

Dermoscopy greatly improves melanoma diagnosis and reduces unneeded surgeries.

A new method was created to test the effectiveness of Dihydrotestosterone (DHT) inhibitors, like finasteride and dutasteride, in human and fish cells. The results showed fish cells are more sensitive to these treatments, and dutasteride works better than finasteride in all tested cells.

The editor suggests removing "race" and "ethnicity" from dermatology and creating tools to objectively assess skin color and hair texture.

The document concludes that gender-affirming treatments are essential for transgender individuals and outlines safe hormone therapy practices.

Different fish use the same genes to regrow teeth.

Overexpression of HDGF in melanocytes does not cause cancer.

Hair patterns in mice are controlled by both a global system dependent on Fz6 and a local self-organizing system.

Early regulatory T cells are crucial for normal skin pigmentation.

DHT affects testicular development and regulates spermatogenesis in some fish.

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

Hormone therapy may increase migraines in transgender women and decrease them in transgender men; more research is needed on migraine management in transgender individuals.

The sharp implanter method for hair graft placement is simpler and faster, allowing for dense packing of grafts with natural results.

Melatonin makes cashmere grow earlier and more by increasing certain gene activity in goats.

Heparin and protamine are promising in tissue repair and organ regeneration, including skin and hair.

Different types of sun exposure damage skin cells and immune cells, with chronic exposure leading to more severe and lasting damage.

Clinicians should understand tattoos to manage health issues, as tattoos can cause complications and affect medical assessments.