A 24-year-old female presents to her primary care physician with complaints of weakness and fatigue, worse in the afternoons for the last several months. The fatigue is relieved with a short nap. She has prominent bilateral ptosis. Which of the following is the target of the autoantibodies in this disease?
A- Acetylcholinesterase
B- Muscle fiber acetylcholine-gated ion channels
C- Muscle fiber membrane
D- Nerve fiber calcium channels
E- Nerve fiber membrane
A- Acetylcholinesterase
B- Muscle fiber acetylcholine-gated ion channels
C- Muscle fiber membrane
D- Nerve fiber calcium channels
E- Nerve fiber membrane