The increase in CXCR2 MFI was dependent on amount of plasma used: cells incubated with higher concentration of CDI-plasma (10% v/v) had more CXCR2, compared to those incubated with low concentration (1% v/v) (3.76 ± 0.21 vs 2.96 ± 0.04 fold increase in MFI; Figure 3D). Here, CXCR2 is linked to clostridium difficile infection.