Fig. 3

CD68-positive macrophages, CD163-positive macrophages, E-cadherin and vimentin was examined by immunohistochemistry. In oral squamous cell carcinoma patients, the absence or reduced expression of CD68-positive macrophages a1, a2, a3 and increased expression of CD163-positive macrophages (b1, b2, b3) was observed in tumor tissue, where have no expression of E-cadherin (c1, c2, c3), but strong cytoplasmic staining of vimentin (d1, d2, d3). (a1-d1, 100×; a2-d2, 200×; a3-d3, 400×)