Fig. 4From: Checkpoint kinase inhibitor AZD7762 enhance cisplatin-induced apoptosis in osteosarcoma cellsHistology and apoptotic status of tumor tissues were evaluated with H&E staining, Ki-67 expression. Immunohistochemistry was used to assess the levels of cleaved caspase-3, p-Chk1, p-Cdc25C, and p-histone H2A.X. Representative images are presented. Scale bar, 50 μmBack to article page