to test the scavenging of reactive oxygen species ( ros ) , we added synovial fluids from patients with rheumatoid arthritis ( ra ) and osteoarthritis , as well as hyaluronic acid ( ha ) and its 2 subcomponents , d-glucuronic acid and n-acetyl-d-glucosamine , to 2 ros-generating systems , activated neutrophils and xanthine-xanthine oxidase .
C0029408
osteoarthritis
C0017718
glucosamine