Figure 1From: Single-photon emission computed tomography of spontaneous liver metastasis from orthotopically implanted human colon cancer cell line stably expressing human sodium/iodide symporter reporter gene In vitro studies. (A) Western blot of NIS protein, (B) NIS protein levels normalized to α-tubulin protein levels, and (C) in vitro99mTcO4 − uptake assay. Cell lines A, B, and C (black bars) were HCT116 stably transfected with pcDNA3-NIS, and cell line N (white bar) was the untransfected negative control. ND, not detectable.Back to article page