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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
    11. Pulling force deforms hair follicle root sheath nuclei and surrounding dermal collagen matrix differently at infundibulum, isthmus and suprabulbar regions Experimental Dermatology · 2019 · 2 citations
    12. Reflectance confocal microscopy can differentiate dermoscopic white dots of the scalp between sweat gland ducts or follicular infundibulum British Journal of Dermatology · 2011 · 20 citations
    13. Upregulation of interfollicular epidermal and hair infundibulum β-catenin expression in Gsdma3 mutant mice Acta histochemica · 2012 · 11 citations
    14. Recurrent inverse necrotizing infundibular crystalline folliculitis Journal of Cutaneous Pathology · 2024 · 1 citations
    15. Spatial transcriptome reveals disturbance of peri-infundibular immune infiltration in androgenetic alopecia Research Square (Research Square) · 2023
    16. Microneedling dilates the follicular infundibulum and increases transfollicular absorption of liposomal sepia melanin Clinical, Cosmetic and Investigational Dermatology · 2015 · 25 citations
    17. THE PRESENCE OF ANTIOXIDANTS IN THE HAIR INFUNDIBULUM IMPLICATIONS IN HAIR DISEASES SUCH AS ALOPECIA International Journal of Research -GRANTHAALAYAH · 2022
    18. Tumors of the follicular infundibulum 2019
    19. Ex-vivo measurement of scalp follicular infundibulum delivery of zinc pyrithione and climbazole from an anti-dandruff shampoo Journal of pharmaceutical and biomedical analysis · 2017 · 12 citations
    20. The Atypical Itch That Rashes-- Disseminated and Recurrent Infundibulofolliculitis (DRIF) in an Atopic African American Male Journal of Allergy and Clinical Immunology · 2016
    21. New insights on dandruff/seborrhoeic dermatitis: the role of the scalp follicular infundibulum in effective treatment strategies 2011 · 46 citations
    22. Early stage alopecia areata is associated with inflammation in the upper dermis and damage to the hair follicle infundibulum Australasian Journal of Dermatology · 2013 · 22 citations
    23. Hypopigmented facial lesions: a case of eruptive tumor of follicular infundibulum International Journal of Dermatology · 2025
    24. Proteome Analysis of Human Sebaceous Follicle Infundibula Extracted from Healthy and Acne-Affected Skin PLoS ONE · 2014 · 62 citations
    25. Proliferative, lymphocytic, infundibular mural folliculitis and dermatitis with prominent follicular apoptosis and parakeratotic casts in four Labrador retrievers: preliminary description and response to therapy Veterinary dermatology · 2013 · 10 citations
    26. Single-cell analysis of 2,3,7,8-tetrachlorodibenzo- <i>p</i> -dioxin (TCDD)-treated murine skin demonstrates that sebaceous gland differentiation precedes <i>Ahr</i> -dependent seboatrophy with elevated expression of infundibular <i>Blimp1</i> bioRxiv (Cold Spring Harbor Laboratory) · 2026
    27. Variations of Hair Follicle Size and Distribution in Different Body Sites Journal of Investigative Dermatology · 2004 · 405 citations
    28. Stress-induced production of chemokines by hair follicles regulates the trafficking of dendritic cells in skin Nature Immunology · 2012 · 286 citations
    29. Organogenesis From Dissociated Cells: Generation of Mature Cycling Hair Follicles From Skin-Derived Cells Journal of Investigative Dermatology · 2005 · 205 citations
    30. Immunohistochemical localization of types 1 and 2 5α-reductase in human scalp British Journal of Dermatology · 1999 · 100 citations