CBFB-MYH11 dilution series. (A) Dilution series of CBFB-MYH11 plasmid of fusion type A and (C) the standard curve produced from it. (B) In analogy, a dilution of a patient sample with CBFB-MYH11 with the first 4 samples defined as standard showing nearly the same PCR efficiency (D). All dilutions were done in duplicate.