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Cross section of experimental porous titanium pylon 28 days after implantation. Image by electron scanning photomicrography (2000×, JEOL-USA, Inc, Peabody, Massachusetts). Note deep penetration of cells inside pores. 1 = erythrocyte, 2 = lymphoid cell, 3 = fibroblast-like cell, 4 = intercellular matrix on metal surface.
