FIG. 3.

Cytokine production by spleen cells from either naive mice (n = 5) or mice immunized with DC/UV-EB (n = 7) as shown along the x axis. IL-2 (A), IL-4 (B), and IFN-γ (B) production by the spleen cells was measured with (hatched bars) or without (open bars) in vitro restimulation by inactivated chlamydial organisms. The concentration of IL-2 was expressed in units per milliliter, while the concentrations of IL-4 and IFN-γ were expressed in picograms per milliliter based on the corresponding cytokine standards.