Abnormal muscle fiber morphology Fingerprint bodies 2022-12-11T14:04:39Z Muscle biopsy: fingerprint bodies at periphery of muscle fibers See Figure 2 of PMID:32008911. Muscle biopsy: fingerprint bodies at periphery of muscle fibres Fingerprint bodies are inclusion bodies located at the periphery of the muscle fibers underneath the sarcolemma (subsarcolemmal), consisting of non-membrane-bound packed lamellae arranged in concentric patterns resembling fingerprints.