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. 2011 Sep 5;66A(12):1267–1273. doi: 10.1093/gerona/glr150

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© The Author 2011. Published by Oxford University Press on behalf of The Gerontological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

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Figure 3. — (a) Representative 6% sodium dodecyl sulfate–polyacrylamide gel electrophoresis showing the distribution of myosin heavy chain (MHC) isoforms in ventricular homogenates from 9-, 24-, and 33-month-old rats. We found significant differences in MHC isoform content in the 24- and 33-month-old rats compared with the 9-month-old rats. (b) Bar graph representation of the MHC isoform distribution in heart homogenates from 9-, 24-, and 33-month-old rats. Values are expressed as the % of total MHC that is αMHC. *Significantly different (p < .05) from 9 month.