2-AG-induced migration of Cb2- or EGFP-transduced murine bone marrow cells. Cb2-transduced (left) or EGFP-transduced (right) bone marrow precursors were exposed to medium with or without 300 nM 2-AG. Cells were placed in the upper well in the presence or absence of 100 nM of either Cb2 (C2) or Cb1 (C1) inverse agonist. Data represent the mean values of 3 independent experiments. Error bars indicate SD.