Fig. 1.
Agarose gel electrophoresis of RT-PCR–amplified BCR/ABL chimeric transcripts. Lane 3 corresponds to the reported patient; lanes 1 and 2 correspond to two control patients with CML bearing b2a2 and b3a2 junction, respectively. The patient's band, resulting from the fusion of BCR exon 19 and ABL exon 2, is 540 bases longer than that of the b3a2 junction.