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Hematoxylin and eosin stained slice of each of the four fibroadenomas: (a) R1, (b) R2, (c) R3, and (d) R4. Original magnification for left-side images was 4× (bar = 500 µm). Boxes in left-side images are the expanded images (40×, bar = 50 µm) on the right side.
