Fig. 5From: Procaine and saline have similar effects on articular cartilage and synovium in rat kneeThe caspase-3 immunoreactivity in the articular cartilage of knee joints. The caspase-3 positive chondrocytes (arrow) in both groups. a–d show saline-administered groups, and e–h show procaine-administered groups. Scale bar: 50 μmBack to article page