Chromosome Abnormalities and Their molecular Correlates in Acute Leukemia SALJUAN CHEN State Key laboratory of medical genomics Shanghai Institute of Hematology, Ruijin Hospital Shanghai Second Medical University(SsMU)Chromosome Abnormalities and Their Molecular Correlates in Acute Leukemia SAI-JUAN CHEN State Key Laboratory of Medical Genomics Shanghai Institute of Hematology, Ruijin Hospital Shanghai Second Medical University(SSMU)