Western blot analysis of Cyr61 expression. (A) All of the cancer cell lines expressed Cyr61. (B) Representative 10 pairs of normal and tumour tissue. Greater Cyr61 expressions were observed in tumour tissues than in normal tissues. The relative Cyr61 expression was measured by densitometry with beta-actin normalization (*). The relative Cyr61 expressions in tumour tissues compared to those in normal tissues were calculated by tumour/normal ratio (T/N).