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. 2012 Jan 19;7(1):e29514. doi: 10.1371/journal.pone.0029514

Figure 4. Inhibition of HO-1 activity by QC-308.

Figure 4

Enzyme activity was determined by measuring the CO produced in 15 min from 50 µM methemalbumin using 0.5 mg/mL rat spleen microsomes. The IC50 was determined by nonlinear regression using GraphPad Prism version 4. Curves represent two independent trials, with each performed in duplicate.