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.
Salzmannâs Nodular Degeneration of the Cornea. Definition: This clinical entity was described in 1925 by Maximilian Salzmann in the German literature as usually following trachoma or phlyctenular keratitis. It is characterized by multiple superficial blue white nodules in the midperiphery of the cornea. Recently the pathologic hallmark has been claimed to be the deposition of oxytalan elastic microfibils (Reference 2). Incidence/Prevalence: Considered rare.