Figure 3.

Sulfide oxidation pathway enzymes are up-regulated in human CRC samples. a, representative Western blot analysis of the sulfide oxidation pathway enzymes (SQR, ETHE1, and TST) in paired normal and cancer tissues from seven patients with CRC. STD denotes purified protein standards, and the numbered N/C pairs denote normal margin versus cancer tissue for each matched sample. b, protein loading control for colon tissue samples as visualized by Coomassie Blue staining. The data are representative of three independent experiments.