Effects of ATO and nilotinib on cell surface antigen expression. A: The level of GPA induced by ATO and nilotinib alone or in combination (P < 0.01 vs. control). B/C: ATO and nilotinib alone or in combination elevated the expression of CD41 and CD11b (P < 0.05). Combined treatment was more potent in upregulating CD41 and CD11b levels as compared with single drug treatment. D: the expression of CD14 after drug treatment as compared with control (P > 0.05).