Percentage of HSP70 expression: patients without irradiation (group 1), patients with conventional irradiation (59.4-72 Gy, group 2) and patients treated with neoadjuvant chemoradiation (40 Gy and cisplatin or carboplatin and paclitaxel, group3). Intima of the veins (A, * p < 0.05 vs. group1 and group 2), media of the veins (B, * p < 0.05 vs. group 2, + p < 0.05 vs. group 1 and # p < 0.05 vs. group1 and group2.), intima of the arteries (C, * p < 0.05 vs. group2 and group3) and media of the arteries (D, + p < 0.05 vs. group2, * p < 0.05 vs.group1 and group2). (black bars = transplant vessels; white bars = recipient vessels. Means and ± SEM).