Fig. 1

Immunohistochemical expression of CD68 and CD163 (× 400). a CD68 immunoreactivity in < 5% of cells (score I), b CD68 immunoreactivity in 5–25% of cells (score II), c CD68 immunoreactivity in > 25% of cells (score III), d CD163 immunoreactivity in < 5% of cells (score I), e CD163 immunoreactivity in 5–25% of cells (score II), and f CD163 immunoreactivity in > 25% of cells (score III)