Figure 1

Representative picture of immunostaining with the antibody EMR8- 5. The cancer cell membrane immunoreactivity level for HLA class I, which was expressed by EMR8-5, was classified into three categories (positive, dull, and negative). Positive was defined as complete and heterogeneous membrane staining in more than 80% of the tumor cells. Dull was defined as faint, incomplete, and heterogeneous membrane staining in 20% ~ 80% of the tumor cells. Negative was defined as membrane staining in less than 20% of the tumor cells. (a) Positive, (b) dull, and (c) negative.