ALK and anaplastic large cell lymphoma: These data are consistent with those from ALCL cell lines, whereby miR-155 expression was assessed in three ALK− and three ALK+ ALCL cell lines and CD3-purified primary human T cells; miR-155 was expressed 7-, 10- and 42-fold higher in ALK-negative DL-40, Mac1 and Mac2a ALCL cell lines, respectively, as compared to normal CD3 purified T cells (Figure 1B).