Fig. 5

B7-H1 is not upregulated following treatment with neoadjuvant therapy in esophageal adenocarcinoma tissue samples. a Percent positivity of patient samples comparing pre-neoadjuvant (cisplatin, 5-FU and radiation) therapy biospies to matched post-neoadjuvant esophagectomys (cisplatin, 5-FU and radiation). b and c B7-H1 expression in two representative pre-treatment specimens using immunohistochemistry (40 ×). d and e Representative images showing B7-H1 expression on immune cells, but not on tumor cells (40 ×)