Fig. 1.

The glutamine transporter ASCT2 is highly expressed in primary colon tumors and colon cancer liver metastases. Representative images of IHC staining for ASCT2 protein in a tissue microarray (TMA) constructed from archival colon tissue sections collected from 115 colon cancer patients representing primary and 111 metastatic disease sections in the liver. a Representative micrograph of sections of normal colon tissue from a patient with colon cancer which stained negative for ASCT2. Representative micrographs are presented of b primary colon cancer sections and c matched liver metastases from a patient with colon cancer.