Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Age-related differences in specific activities of antioxidant enzymes 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 P < 0.01, Student's t-test). SOD = superoxide dismutase; CAT = catalase; GPx = glutathione peroxidase; nonspecific Px = nonspecific peroxidase.
