Analysis of microsatellite polymorphic markers at 11q23 in children with acute leukemias. Microsatellite markers were amplified and separated on a denaturing polyacrylamide gel electrophoresis (see Materials and Methods). p, presentation sample; r, remission sample. (A) Diagram showing location of MLL gene, microsatellite markers (mllGAAn, D11S1356, and D11S1364) and nearby genes (CD3D and CBL2) at 11q23. (B) mllGAAn marker. (C) D11S1356 marker. (D) D11S1364 marker.