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    Glossary Infundibulum

    funnel-shaped upper part of a hair follicle

    The infundibulum is the funnel-shaped upper part of a hair follicle, located just below the opening of the follicle at the skin's surface. It plays a crucial role in guiding the hair shaft as it grows and emerges from the skin, and it also serves as a pathway for sebum and other substances to reach the skin's surface.

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    1. Deciphering the functions of the hair follicle infundibulum in skin physiology and disease Cell and Tissue Research · 2014 · 38 citations
    2. The changes in the expression levels of follicular markers in keratoacanthoma depend on the stage: keratoacanthoma is a follicular neoplasm exhibiting infundibular/isthmic differentiation without expression of CK15 Journal of Cutaneous Pathology · 2014 · 28 citations
    3. Pilomatricoma can differentiate not only towards hair matrix and hair cortex, but also follicular infundibulum, outer root sheath and hair bulge Experimental Dermatology · 2009 · 18 citations
    4. Infundibular protein and RNA microarray analyses from affected and clinically non-affected scalp in male androgenetic alopecia patients Experimental Dermatology · 2017 · 8 citations
    5. Barraquer–Simons syndrome with benign infundibulocystic proliferation International Journal of Dermatology · 2003 · 4 citations
    6. Seborrheic karatosis, a tumor of the infundibular and isthmus of hair follicles: Identification of hair sheath keratins and histopathological features suggesting hair follicle origin. The Nishinihon Journal of Dermatology · 1989 · 2 citations
    7. Single‐Cell Analysis of Late‐Stage Wound‐Induced Hair Follicle Neogenesis Reveals Keratinocyte Heterogeneity and Enrichment of Infundibular Basal Keratinocytes Experimental Dermatology · 2026
    8. Dermoscopic features of infundibular keratinising acanthomas and follicular cysts: Description, assessment and histopathological correlation Veterinary Dermatology · 2025
    9. Proliferative, lymphocytic, infundibular mural folliculitis and dermatitis with prominent follicular apoptosis and parakeratotic casts in a Labrador retriever: Clinical, histopathological and dermoscopic features and co‐morbidities Veterinary Dermatology · 2024
    10. 584 Dandruff is associated with perturbations of hair follicle immune privilege, and the infundibular and epidermal immune microenvironment Journal of Investigative Dermatology · 2022
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    1. Fibrosing alopecia in a pattern distribution Reddit · 22 Mar 2024

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