n. An integral membrane protein involved in the movement of different molecules or ions in the same direction across a phospholipid membrane
Word Usage
"Yeom CJ, Chung JK, Kang JH, Jeon YH, Kim KI, et al. (2008) Visualization of hypoxia-inducible factor-1 transcriptional activation in C6 glioma using luciferase and sodium iodide symporter genes."