The Arkansas Railroad Museum preserves the last steam-powered locomotive built in Arkansas and includes various artifacts of Arkansasâs railroad heritage. The Pine Bluff/Jefferson County Historical Museum opened in 1980 in the restored 1907 Union Pacific train depot.
myasthenia gravis. An autoimmune disease affecting neuromuscular junctions characterized by muscle weakness and fatigability. It is due to a destruction of acetylcholine receptors in the postsynaptic membrane of the neuromuscular junction.
Mitochondrial diseases take on unique characteristics both because of the way the diseases are often inherited and because mitochondria are so critical to cell function. The subclass of these diseases that have neuromuscular disease symptoms are often called a mitochondrial myopathy.ther causes of mitochondrial disease are mutations in genes of the nuclear DNA, whose gene products are imported into the mitochondria (mitochondrial proteins) as well as acquired mitochondrial conditions.