Figure 1. Expression pattern of POSTN in formalin-fixed paraffin-embedded specimens of adjacent pathologically normal mucosa, primary tumors, and metastatic tumors of CRC patients in Shanghai cohort.

A. Representative immunostainings of POSTN in adjacent mucosa tissues, primary tumors, and metastatic tumors. POSTN was expressed in the cytoplasm of epithelial cells and stromal cells. Bar, 50 μm. B. Expression pattern of POSTN protein in adjacent mucosa tissues, primary tumors, and metastatic tumors. Abbreviation and mark: CRC, colorectal carcinoma; ***, P < 0.001.