Imagine that you are part of a research team that specializes in diagnosing disorders associated with malfunctioning cellular structures. Medical doctors consult your group to help diagnose particularly difficult cases. You have been presented with the following data:

Patient History:
o Seven year-old boy
o Fatigue
o Muscle weakness
o Low endurance
o Loss of coordination
o Progressive difficulty walkin

Physical Examination
o Muscle loss & deformity
o Awkward gait
o Difficulty breathing

Laboratory Results
o Cells have abnormal shape
o Cell division is abnormal
o Impaired intracellular movement of material.

Explain which structures may be involved. Use the patient history data to support your conclusions.