highly significantP <0.001
There was a highly significant correlation of ERK1 with ERK2 protein levels ( P <0.001).
There was a highly significant correlation of ERK1 with ERK2 protein levels ( P <0.001).
No significant correlation with the phosphorylated forms of Fra-1 and Fra-2 was found, except a weak trend for a higher phosphorylated Fra-1 band intensity in tumours with absent/weak p-ERK1 expression ( Table 1 ).