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"Myopathy," sarcoplasmic body
- ... movement. People with STAC3 disorder have muscle weakness (myopathy) and poor muscle tone (hypotonia) throughout the body that typically begins at birth.Muscle weakness underlies ...
- ... to the muscle weakness characteristic of tubular aggregate myopathy. Evidence suggests that the tubular aggregates are composed of proteins that are normally part of the sarcoplasmic reticulum. Although the mechanism is unknown, some researchers ...