A very serious autoimmune disease characterized by muscular weakness is known as:
A) dystrophy.
B) myasthenia gravis.
C) atrophy.
D) myalgia.
B
Explanation: A) Dystrophy is degeneration of muscles caused by defective nourishment.
B) Correct.
C) Atrophy is wasting of muscle tissue.
D) Myalgia is muscle pain.
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