Figure 3

The ratio of configurational isomers to (ZZ)-bilirubin at photoequilibrium. The values of (ZE)-bilirubin and (EZ)-bilirubin were in a state of photoequilibrium with (ZZ)-bilirubin at 3 min. The closed circle represents the (ZE)-bilirubin/(ZZ)-bilirubin ratio, and the open circle represents the (EZ)-bilirubin/(ZZ)-bilirubin ratio. Each circle and error bar represent the mean ± SD. DMSO, dimethyl sulfoxide.