Results from postmortem analysis of plasma and tumoural tissue in the study of gender influence. Left bars correspond to the GFPA determination in rats measured as a percentage of the same value in sham animals. Right bars show the values in the measurement of the Evans blue accumulation. Unpaired t test analysis was performed on the data by comparing both genders in the same area. Statistically significant differences are indicated in the columns, where *P < 0.05 and **P < 0.01.