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Representative four-chamber view cine magnetic resonance images: (A,E) 8-week-old control mouse, (B,F) 8-week-old mdx mouse, (C,G) 12-week-old control, (D,H) 12-week-old mdx mouse. (A–D) The end-diastolic phase of a mouse heart; (E–H) the end-systolic phase of a mouse heart.
