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This study found that vertical sections of alopecia biopsy specimens had a higher concordance rate with the original combined diagnosis compared to transverse sections alone, although both methods have their pros and cons.

This study demonstrated that keratin is widely present in various epithelial cells, providing structural strength and potential insights into the origin of cell lines.

This review explores how epidermal stem cells contribute to the development and maintenance of various skin structures, and highlights specific markers and proteins associated with these cells, but reports no new clinical results.

This perspective discusses Villani et al.'s findings on the role of the IGF regulatory protein Igfbp2 in basal cell carcinogenesis and highlights potential therapeutic and preventive targets, while raising questions about the cell of origin.

This study focuses on improving the detection and characterization of an enzyme in guinea pig hair follicles that converts arginine to citrulline, highlighting challenges with assay sensitivity and reproducibility.

This research explored the components of stem cell niches to better understand how epidermal stem cells are maintained, focusing on CD271+ cells in specific skin layers.

This study used proteomic profiling to reveal significant individual and site-specific differences in human hair shaft proteins, which may improve the differentiation of hair based on ethnic origin and individual identity.

In this study, the lack of cathepsin expression in Kaposi's sarcoma lesions suggests a benign hyperplastic origin for these lesions.

In this study, researchers found that hair follicle stem cells in mice can generate both hair follicle and epidermis cells, highlighting their potential bipotency.

This review discusses the distinct roles and surprising developmental flexibility of multiple somatic stem cell types in tissue maintenance and repair, reporting no new results but highlighting emerging questions about their regulation and origins.

This study reports that human eccrine sweat gland cells are capable of forming a stratified epidermis, suggesting they may serve as an additional source of keratinocytes for skin repair.

This study found that different epidermal stem cell populations contribute to the formation of various skin tumors and new hair follicles following β-catenin activation in the adult epidermis.

This review examines the differentiation potential of epithelial cells from various sources in hair follicle formation, concluding that complex interactions are required for hair-specific characteristics, which were achieved in vivo but not in vitro.

This study demonstrates a varied distribution of keratins in the epidermis of the Malayan pangolin, suggesting evolutionary adaptations related to their distinctive scales.

In this study, researchers observed that the epidermal specializations on the tail scales of Lygodactylus lizards, including sensory organs and specific secretory glands, are fully restored with similar structure and distribution on regenerated tails.

This study indicates that transient Msx2 expression is critical for wound-induced hair follicle neogenesis, with distinct phases in the healing process essential for epidermal competence and hair regeneration.

This review discusses the characteristics and potential applications of epidermal stem cells in dermatology, without providing new clinical results.

This study used porcine models to isolate and culture stem cells from brain and hair follicles, shedding light on differentiation processes and potential markers for stem cell compartments under lab conditions.

This study found that Hopx labels a long-lived progenitor population in hair follicles, which contributes to hair follicle stem cell homeostasis and has an alternative origin from previously thought progenitors.

In this study, repressing β-catenin/Lef1 signalling in mouse epidermis led to progressive hair loss, dermal cysts, and spontaneous skin tumors with sebaceous differentiation, indicating altered keratinocyte differentiation and potential tumourigenic processes.

This study found that solid basal cell epitheliomas and the outer root sheath of human hair follicles display nearly identical cytokeratin profiles, suggesting a potential origin connection.

In this study, the immunohistochemical and lectin binding profiles of basal cell carcinoma closely resembled those of the outer root sheath of vellus hair follicles, suggesting a potential histochemical relationship.

This study demonstrated that cultured human dermal papilla cells can induce full hair follicle formation when combined with neonatal foreskin keratinocytes in a grafted dermal-epidermal construct on mice.

This study found that keratin 15 expression in trichoepitheliomas and some basal cell carcinomas suggests a link to hair follicle stem cells in the bulge.

This study found that transplanting GFP transgenic tail skin onto wild-type mice leads to partial replacement of dermis, nerves, and blood vessels by recipient tissue after six months, while epidermis, hair follicles, and sebaceous glands persist from the graft.

This study found that skin fibroblasts in mice arise from two distinct lineages which contribute differently to dermal structure and repair, impacting hair follicle formation during wound healing.

This study reveals that basement membrane composition and structure in mouse hair follicles are specialized for distinct inter-tissue interactions, with laminin α5 being essential for maintaining these interfaces.

In this case report, a 14-year-old boy was diagnosed with nevus comedonicus, a condition characterized by dilated follicular openings filled with keratin, presenting in a Blaschkoid pattern; treatment with topical tretinoin 0.1% cream was recommended.

This review discusses the biology and development of skin melanocytes, but reports no new clinical findings.

This review explores how adult skin epithelia preserve stem cell populations for hair follicle regeneration and wound healing, but reports no new experimental results.