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Ultrastructural changes in cardiomyocytes of caspase3 or control mice. (A and B) Myofibrillar morphology and content in control (A) and transgenic (B) mice. (C and D) Nuclear morphology in control (C) and transgenic (D) mice. (E and F) Mitochondrial ultrastructure in control (E) and transgenic (F) mice. Ultrastructural defects are present in cardiomyocytes of transgenic but not control mice.
