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. 2025 Aug 21;15:30821. doi: 10.1038/s41598-025-16570-9

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© The Author(s) 2025

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Fig. 2 — Normal lymph node seen on FF-OCT and histology images. Digital H&E slides, x2 magnification (A), with two close-up views at x40 magnification (red box = B and black box = C), showing normal adipose tissue (large arrow), vessels (thin arrow), and normal lymphoid tissue (star). FF-OCT image of the same regions (D) with two close-up views (red box = E and white box = F), showing adipose tissue (large arrow) with a “black honeycomb” appearance, connective tissue and vessels appearing as white linear areas (thin arrow), and normal lymphoid tissue (star) appearing as homogeneous nodular regions of small regular cells with a dark gray color.