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This review explores the skin regeneration process in spiny mice and highlights differences from laboratory mice, focusing on potential molecular and immune system roles without reporting new experimental results.

This study found no significant association between the degree of male-pattern baldness and serum 25-hydroxyvitamin D levels in healthy middle-aged and older men.

Keratin gene clusters in humans and marsupials are similarly organized.

This paper reviews the role of the telomere-telomerase system in cellular ageing and cancer, discussing potential therapies but reporting no new experimental results.

This study found widespread losses of g-type lysozyme genes across various mammalian lineages, with both gene copies extensively lost in cetaceans and sirenians, and linked this to hairlessness in these fully aquatic mammals.

This review discusses historical and recent advances in understanding the embryonic organizer's role in patterning during development, including molecular pathways and future research challenges, but reports no new experimental data.

Integumentary organs adapt and evolve for survival, with potential uses in regenerative medicine.

This study reveals that transglutaminase activity is widespread in integumentary structures of mammals and birds, suggesting it plays a significant role in the cornification of hard skin appendages like nails and feathers.

This review discusses the use of hairs and feathers as defensive tools through toxin incorporation in certain mammals and birds and reports no new experimental findings.

Postmenopausal women may experience frontal hairline and eyebrow loss due to cicatricial fibrosis.

This study identified 53 keratins in the yak genome, predicting diverse phosphorylation sites and subcellular localizations, and highlighted strong gene expression correlations during the yak hair follicle development cycle.

This study found that the distribution of mast cell prostaglandin d-synthase in the scalp spatially aligns with the pattern of androgenetic alopecia, suggesting a programmed vulnerability to hair loss.

This study identified distinct gene expression programs in keratinocytes responsible for forming hard scales and soft interscale epidermis in chickens, revealing conserved differentiation genes similar to those in human skin.

This study found that the unique crest feather formation in Polish chickens is driven by a 195-bp duplication in the HoxC10 gene region, which alters gene expression by modifying the genomic structure, suggesting a mechanism for diverse integumentary appendages in birds.

This article discusses how the brain's neural circuits evaluate skin aging to judge social standing and suggests that people often attempt to deceive themselves and others about their true age.

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

This collection of reviews, edited by Ken Lukowiak and Janis Weeks, explores diverse sensory systems across species, including olfaction, echolocation, magnetoreception, and visual adaptations, without presenting new experimental results.

This study found that a cuticle keratin gene in sheep is a pseudogene due to gene duplication and mutations, lacking expression in vivo.

This study discovered a conserved "fiber-like-motif" of melanosomes aligned in hair across various mammalian species, shedding light on the internal structure that influences hair's thermal and mechanical properties.

In this study, researchers found that the cornification process in the nuptial pads of Xenopus frogs involves the expression of the type II hair keratin homolog, krt59, and is regulated by the transcription factor hoxc13, showing similarities to mammalian hair evolution.

This study found that regulatory T cells accumulate in hair follicle epithelium via the Cxcr4-Cxcl12 axis, partially influenced by glucocorticoid receptor signaling, promoting hair regeneration; similar mechanisms were observed in human and murine skin.

This study suggests that the prevalence of red beards in individuals with dark hair may be explained by Thayer’s Theorem of countershading.

The KDM1 gene helps Venus flytraps close by managing potassium ions.

This study suggests that GATA6 is a key regulator of the upper pilo-sebaceous unit homeostasis and differentiation in human skin.

This review discusses treatments for androgenic alopecia, noting that current options like finasteride and minoxidil are effective for only 10% of patients, thus highlighting the need for new therapies.

This study found that changes in the expression of the Agouti gene contribute to the pale pigmentation in beach mice, with implications for melanocyte development and localization.

This review discusses advancements in techniques for scalp reconstruction, highlighting improved cosmetic outcomes and reduced morbidity, but reports no new clinical results.

The document concludes that hair transplant clinics should focus on effective marketing, online presence, and quality patient care, while the industry should promote high standards and education through organizations like FUE Europe.

This review describes the hair follicle's structure, particularly its role as a stem cell niche, and discusses its potential application in skin tissue engineering, but does not present new research findings.

The researchers reported that both estrogen receptors ERα and ERβ are expressed in human testis, and identified two novel genes, Aven and Regucalcin, linked to estrogen and androgen regulation, which may be crucial for spermatogenesis.