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Figure 4 Skeletal muscle biopsy in dilated cardiomyopathy due to laminopathy. (A) Family MDDC1, Patient III-4 (hematoxylin-eosin, 40x), and (B) family DNFDC33, Patient II-2 (trichrome, 40x). Vastus lateralis muscle biopsies showing variability in fiber size, some angulated fibers, and several internal nuclei.