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Medical Dictionary

myasthenia gravis

noun myasthenia gra·vis \-ˈgrav-əs, -ˈgräv-\

Medical Definition of MYASTHENIA GRAVIS

:  a disease characterized by progressive weakness and exhaustibility of voluntary muscles without atrophy or sensory disturbance and caused by an autoimmune attack on acetylcholine receptors at neuromuscular junctions


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