Figure 3.

Proliferation of passage 1 human articular cartilage cells grown on tissue culture plastic (24-well plate) in different culture media. FCS, foetal calf serum; FGF-2, fibroblast growth factor-2; PTF, medium containing 10% serum, 5 ng/ml FGF-2, 10 ng/ml platelet-derived growth factor-BB and 1 ng/ml transforming growth factor β-1.