Cytogenetic anallysis of the complex t(2;9;14) translocation of patient MZL-1. (A) Partial karyotype of three representative metaphase nuclei. The normal homologues (left) and the derivative (der) chromosomes (right) of the t(2;9;14)(p12;p13;q32) translocation are shown in their G-banded form. (B) Schematic representation of the t(2;9;14) translocation. Ideograms of the normal and derivative chromosomes are shown together with the location and transcriptional direction of the Igκ, IgH, andPAX-5 genes.