Effects of ketamine on Interleukin-4 and Interleukin-13 protein levels in BALF from ovalbumin-sensitized and -challenged rats. IL-4 (A) and IL-13 (B) protein levels in BALF were measured by ELISA. Bars represent mean ± SEM (n = 6–8/group). # P < 0.05 vs. PBS control, * P < 0.05 vs. OVA control. The groups are as shown in Figure 1.