Chondrocyte MMP-8: Upregulation of neutrophil collagenase by interleukin-1β in human cartilage from knee and ankle joints. - Chubinskaya,S.; Huch,K.; Mikecz,K.; Cs-Szabo,G.; Hasty,K.A.; Kuettner,K.E.; Cole,A.A. (Lab Invest, 1996)