Immunohistochemical analysis of ppm1d in HCC and non-cancerous liver tissues.

<p>(A) Representative images of ppm1d staining in HCC and non-cancerous liver tissues. The positive cells were stained dark brown. (a) Negative ppm1d staining in normal liver tissue. (b) Negative staining of HCC tissue without ppm1d primary antibody. (c) Ppm1d-positive non-cancerous liver tissue. (d) High expression of ppm1d in HCC tissue. Magnification, ×200; Scale bar, 100 µm. (B) The distribution of difference of ppm1d staining in HCC and non-cancerous liver tissues (ΔIRS = IRS_HCC-IRS_{non-cancerous}). p<0.01. IRS, immunoreactivity score.