DCs pulsed with 12B1-derived CRCL induce a long-term tumor-specific immune response. (A) At 11 or 18 weeks after initial challenge, naive mice (n = 3) or surviving mice (n = 4 for CRCL, 11 for DCs pulsed with CRCL) were rechallenged with 10³ live 12B1 cells. Tumor volume was monitored. (B) The same mice were challenged with 10⁶ A20 cells in the right groin.