The blast cells which appear during acute transformation of CML have
been charaterized as resembling lymphoblasts (ie. CD10+/CD19+).
This is true in lymphoid blast crisis, but in myeloid blast crisis the blast
cells of course have a myeloid phenotype. Myeloid blast crisis occurs in about
75% of cases and lymphoid in about 25% of cases. (I'm sure this was just an
oversight in your post, but thought I would make this clear for those with less
experience with hematologic disorders).
Karen Mann
Clinical Flow Cytometry
Duke University Medical Center
Durham, NC