Figure 2

Preservation of Eag1 antigen in paraffin-embedded tissue. The percentage of Eag1-expressing tumours decreases with the elapsed storage time of samples before the immunohistochemistry procedure was performed. Insert: The percentage of Eag1-expressing tumours increases over the years (1997–2004) indicating that the Eag1 antigen is not stable in paraffin-embedded tissue for long periods of time. The numbers indicate the number of cases tested for each data point. *p < 0.01, **p < 0.001