[Ultrastructural morphometric studies of the myocardium of cardiomyopathic hamsters of the BI0 8262 strain].

Tissue of myocardium from (8262) hamsters, 2, 6 and 27 weeks of age, were analyzed with quantitative microscopic techniques. Besides alterations of some other structures, we found the most evident changes in the mitochondrial abnormalities exist at all ages. They may be related to defective energetic mechanism.