9Salvemini D,Misko TP,Masferrer JL,et al.Nitric oxide activates cyclooxygenase enzymes.Proc Natl Acad Sci U S A 1993;90(15):7240-4.
10Nishida K,Doi T,Matsuo M,et al. Involvement of nitric oxide in chondrocyte cell death in chondro-osteophyte formation. Osteoarthritis Cartilage 2001;9(3):232-7.
