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Figure 4. Collagenase/gelatinase activity in conditioned media from cartilage explants exposed to recombinant equine interleukin-1β (reIL-1) or recombinant human interleukin-1β (rhIL-1) for 24 h. Treatments: lane 1: control; lane 2: 50 ng/mL rhIL-1β; lane 3: 10 ng/mL reIL-1β; lane 4: 50 ng/mL reIL-1β; lane 5: 100 ng/mL reIL-1β.
