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Histological features of the IFP. (A) (a) Change in the total area over time. (b) Representative histological sections of IFP tissue stained with hematoxylin and eosin. Scale bar = 2 mm. (B) (a) Change in one cell area over time. (b) High magnified histological images of IFP stained with hematoxylin and eosin. Scale bar = 200 μm.
