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. Author manuscript; available in PMC: 2013 Mar 1.
Published in final edited form as: Exp Gerontol. 2011 Dec 24;47(3):223–228. doi: 10.1016/j.exger.2011.11.015

Figure 2.

Figure 2

Lifespan profiles of blood selenium and free and protein-bound glutathione levels in aging rats. Rats were sacrificed at 4, 12, 18 and 24 months of age. Plasma selenium levels and whole blood free and bound glutathione levels were measured as described in text. Points and error bars represent mean ± SEM (n=3–6). Asterisks reflect statistical significance compared to the young group (P<0.05).