Correlation between ERα and CLOCK expression in human breast tumor tissue samples.

Abstract

<p>A, Representative results showing the immunohistochemical staining of ERα and CLOCK in serial sections of the breast tumor tissues. Each sample was incubated with antibody against ERα or CLOCK. Positive staining and negative staining are indicated by brown and blue staining, respectively (×200 Magnification). B, Correlation between ERα and CLOCK expression suggested by the 32 breast tumor samples. <i>χ</i>² test was used for statistical analysis. <i>P</i> values less than 0.05 were considered to indicate statistical significance.</p