(a) CBR1
(b) AKR1C
Figure 2: Specific activities of biotransformation enzymes with reducing 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). CBR1 = carbonyl reductase 1; AKR1C = aldo-keto reductase 1C.