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Other general growth factor changes in hypoxia after crosstalk between chondrocytes and osteoblasts. IGF‐1, FGF‐1/‐2, TGF‐β1 and EGF gene expression in osteoblasts and chondrocytes measured at different oxygen tensions and from different culture methods. GAPDH and β‐ACTIN were used as reference genes. The product sizes are indicated in the left lane. The samples were taken at 1, 2, 3 and 5 days. The gels shown are representative of three different experiments (n = 3).
