Advances in clinical diagnosis of secondary progressive multiple sclerosis
Multiple sclerosis(MS) is a chronic inflammatory disease of the central ssp218dda-sf nervous system that involves demyelination and axonal degeneration.Usually, MS begins with a relapsing-remitting MS (RRMS) course, and approxi mately will develop into secondary progressive multiple sclerosis (SPMS).At present, the pathogenesis of SPMS is not compl