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Relationship between extracellular‐regulated kinase (ERK1/2) mRNA and phosphorylated ERK (p‐ERK) expression in endometrial cancer specimens. Relative levels of (a) ERK1 and (b) ERK2 mRNA expression were measured by real‐time polymerase chain reaction in 22 endometrial cancer specimens and were compared between two groups with low and high p‐ERK expression. Bars represent mean values.
