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This review discusses the history and development of keratin biomaterials for biomedical uses, highlighting their biological activity and biocompatibility, and provides no new research findings.

This review discusses the roles of several neuropeptides in skin-immune interactions and inflammatory responses, reporting no new results and emphasizing the need for further study in conditions such as psoriasis and dermatitis.

This study revealed the complex three-dimensional innervation of touch domes in cat forepaw skin, highlighting the extensive branching and unmyelinated endings associated with Merkel cell–axon complexes.

This article reviews the complex structure and molecular composition of hair keratins, highlighting their self-assembly process and implications for keratin extraction techniques, but reports no new experimental results.

This study reported that newly developed RADA16-I peptide hybrids, with active motifs like GHK and KGHK, demonstrated improved wound healing in a mouse skin injury model without cytotoxicity, suggesting they might be effective scaffolds for tissue engineering and regeneration.

This study suggests that inorganic magnesium silicate sprays can improve burn wound repair and promote regeneration of skin appendages, showing superior results compared to commercial wound healing products in animal models.

In this case report, a 34-year-old with a slowly growing mass near the right parotid gland was diagnosed with pilomatrixoma, a rare benign hair follicle tumor, which was only confirmed pathologically after surgical excision.

This article discusses the structure and function of the skin's epidermis, detailing its role as a protective barrier and nutrient exchange system, without presenting new research findings.

This study found that Neuregulin3 can influence the development and differentiation of mammary glands and epidermal features in mice, potentially by inducing c-Myc and altering cell proliferation and adhesion.

This review discusses the potential of hair follicle stem cells as a novel source for cell therapy in neurodegenerative disorders, but it reports no new clinical results.

This review discusses the roles of peripheral nerves in stem cell and immune responses within the skin and hematopoietic system, emphasizing their potential in developing new therapies; it reports no new experimental results.

This study successfully created a mouse model with conditional knockout of the p75 neurotrophin receptor gene in epidermis cells, with no significant changes in skin histomorphology observed.

This article reviews the underlying mechanisms of segmental vitiligo with white hair, focusing on skin and hair follicle melanocytes, and proposes potential targets for treatment, highlighting neuroendocrine factors as possible contributors to the condition.

This review discusses the structure and regenerative potential of hair follicles, highlighting their role in wound healing, stem cell populations, and keratin-based biomaterials, but it reports no new clinical results.

This review outlines the histological structures of the skin, highlighting species and regional differences in dermal absorption and obstacles encountered in toxicological assessments due to epidermal thickness variability, contact dermatitis reactions, and stem cell vulnerabilities.

This review discusses the structure, functions, and growth cycle of human hair, emphasizing its reduced growth and protective roles, and reports no new research findings.

This review derived guidelines for scalp surgery suggesting improved outcomes when avoiding neurovascular structures, preserving tissue integrity, and maintaining hair direction, but it reports no new clinical results.

The researchers observed that in cichlid fishes with different dental structures, tooth replacement accelerated more than three times following tooth extraction, alongside distinct changes in gene expression and cellular interactions over one week, providing insights into tooth regeneration mechanisms in vertebrates.

This article reviews age-related changes in facial structure at a cellular level and summarizes potential solutions for rejuvenation surgery, but reports no new clinical results.

Researchers observed that dutasteride and finasteride caused structural changes in the penises of both control and hypertensive rats, with dutasteride having a more pronounced effect on the corpus cavernosum.

This review discusses the isolation, structure, and bioactivity of lignans and neolignans from 2016 to mid-2018, reporting no new clinical results but highlighting their potential protective properties against diseases such as cancer and neurodegeneration.

This study found that hair follicle stem cells can effectively enhance nerve regeneration and restore function in peripheral nerve injuries in mice, suggesting their potential as a source for autologous stem cell therapy.

This study demonstrated that CD19-CAR T cell therapy may promote structural regeneration in the skin of systemic sclerosis patients, as evidenced by histological improvements and fibroblast population changes, suggesting its potential for tissue remodeling in fibrotic diseases.

This study found that the human hairline is closely linked to several cranial, cerebral, and vascular structures, enabling precise localization of key neuroanatomical landmarks, which could assist in planning neurosurgical procedures.

This study found that co-culturing dermal papilla cells in a 3D structure with adipose-derived stem cells may enhance the expression of hair inductivity markers compared to 2D cultures.

This study reports that the white rhinoceros has a unique integumentary structure among large herbivores, characterized by thick epidermis, organized collagen bundles, and the presence of coiled sweat glands.

This review provides an in-depth analysis of the structure and function of c-kit activation, and its role in both normal physiological and pathological conditions, with no new research findings reported.

This study found that genetic ablation of Tet genes in mice led to changes in hair structure and keratin gene expression, indicating a role for Tet-mediated 5hmC DNA oxidation in hair follicle development and cycling.

This review discusses the protective and stress-buffering roles of melatonin in skin functions and structures but does not present new clinical findings.

This overview examines the biology, origin, structure, and function of various cells and structures, such as the blood-retinal barrier and Merkel cells, and discusses their roles in disease pathogenesis, along with recent findings related to the lymph nodes' paracortex.