low-mr substrates containing leu , lys , or gly or the large-mr substrate azocoll were not degraded by ra patients ' plasma . alpha 2m from ra patients ' plasma attached to a solid-phase immunoabsorbent degraded an arg-containing tripeptide much better than did the alpha 2m from normal donors , from patients with systemic lupus erythematosus , or from those with joint inflammation of other , `` '' non-autoimmune '' '' origin .
C0003873
ra
C0003864
joint