Sensitization with IC-loaded BMDCs induces DTH effector responses. Groups of eight to ten mice were immunized with 1 × 106 cells per mouse of OVA-pulsed DCs or IC-pulsed DCs in the front footpad. One week after primary immunization (sensitization), the mice were challenged with PBS in one footpad and OVA in the other footpad. Change in footpad thickness (OVA-injected footpad vs. PBS-injected control footpad) was measured 9 days after initial immunization. Error bars are the SEM of each group.