The induction of cell death in human osteoarthritis chondrocytes by nitric oxide is related to the production of prostaglandin E2 via the induction of cyclooxygenase-2. - Notoya,K.; Jovanovic,D.V.; Reboul,P.; Martel-Pelletier,J.; Mineau,F.; Pelletier,J.P. (J Immunol, 2000)