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Representative photomicrographs of normal dental pulp of rats (A) and the newly connective tissue similar to dental pulp inside the apical area of the root canal (B, C). The newly formed tissue with the blood vessels (between arrows) shows positive reaction to the VEGFR2 antibody (C). (A, B: H&E, original magnification of 100X; C: immunohistochemistry, 400X).
