Myasthenia gravis (MG) is the most commonly occurring disorder of neuromuscular junction transmission and is characterized by weakness and fatigue of skeletal muscles. It is a T-cell dependent antibody-mediated autoimmune disease. Back to Top.
Definition of tyranny. Tyranny is usually thought of as cruel and oppressive, and it often is, but the original definition of the term was rule by persons who lack legitimacy, whether they be malign or benevolent. Historically, benign tyrannies have tended to be insecure, and to try to maintain their power by becoming increasingly oppressive.
WordReference Random House Unabridged Dictionary of American English Â© 2016. tyâ¢rant (tÄ«â²rÉnt), n. 1  a sovereign or other ruler who uses power oppressively or unjustly. 2  any person in a position of authority who exercises power oppressively or despotically.  a tyrannical or compulsory influence.