Defective in vivo migration of BM-BLT1/2^−/− DCs. Mature DCs from WT and BLT1/2^−/− mice were labeled with the vital dye CFSE and injected subcutaneously in the hind leg footpad of WT mice. Popliteal lymph nodes were recovered at the indicated times and the cell suspension was evaluated by flow cytometry. One experiment representative of 3 is shown (*P < .05, *P < .01 by t test, vs respective WT control group). Error bars indicate SE.