Collagenases, members of the matrix metalloproteinase (MMP) family, are involved in the physiological and pathological turnover of connective tissues.  Collagenase production is significantly increased at inflammation sites due to the stimulation of pro-inflammatory cytokines.  Chondrex provides rMMP8 and rMMP13, in addition to collagenase assay kits using FITC-type I collagen, FITC-type II collagen, or a flurogenic peptide as a substrate.