Fig. 2

a. IL-4 production by LN cells. b. IL-5 production by LN cells. Mice were sensitized with OVA alone, OVA + rutile NP, OVA + anatase NP, or OVA + CB, and challenged with OVA. LN cell preparations were made and incubated with Con A for 24 h. N = 6, mean ± SEM is shown. (*) P < 0.05 vs. OVA alone