ADailyDoseofMedicalEnglish
每日一点医学英语
RheumatoidArthritis(RA)
Rheumatoidarthritis(RA)isachronicsystemicautoimmunediseasethatprimarilyinvolvesthejoints.RAcausesdamagemediatedbycytokines,chemokines,andmetalloproteases.Characteristically,peripheraljoints(eg,wrists,metacarpophalangealjoints)aresymmetricallyinflamed,leadingtoprogressivedestructionofarticularstructures,usuallyac