To further characterize the critical role of SHIP-1 and macrophage polarization during bacterial infection, we performed qPCR microarray to screen the genes that are involved in macrophage function and phagocytosis after transfection of SHIP siRNA and control siRNA in PAO1 infected MH-S cells (Figure 4A) (gene primers are shown in Table S1). Here, INPP5D is linked to bacterial infectious disease.