408573.fig.003a
(a)  GST
408573.fig.003b
(b) UGT
Figure 3: Specific activities of biotransformation enzymes with conjugative activity in rat liver. The white column represents young (6-week-old) rats, and the hatched column indicates old (21-month-old) rats. Values are expressed as mean ± SD (six animals per age group) (*data with , Student’s t-test). GST = glutathione S-transferase; UGT = UDP-glucuronosyl transferase.