Myasthenia gravis (MG) is a rare nerve-muscle disease characterized by muscle weakness and tiredness . It occurs when the transmission between nerve cells and the body's muscles is disrupted . This failure is typically due to immune factors attacking the junction where nerves and the muscular system meet – the neuromuscular synapse . Consequently

Vanrafia is/stands as/presents itself as a rare/unusual/uncommon language spoken/used/practiced in isolated/remote/hidden regions of the world. Little/Very little/Scarcely any information/knowledge/data exists/is available/can be found about its origins/history/development. Speakers of Vanrafia often/tend to/usually live/reside/dwell in small/tight