CD276 and neoplasm: Examined by immunofluorescence using purified human B7-H3 scFv-mFc and CD70 scFv-mFc fusion protein as primary antibody, expression of CD70 and B7-H3 could be detected on the surface of NCI-H460, A375, MDA-MB-435 and 786-O tumor cells (Figure 2A-B).