Leukemic cellsâ SNPs are conserved in ex vivo. (A) Whole exome sequencing of the leukemia in xenografts (before culture, B. C.), after culture (A. C.) and after transplantation (A. T.) revealed the presence of genome mutations. Similar rates of nonsynonymous and synonymous single nucleotide variants (SNVs) within the leukemia of patient #1 and patient #7. (B, C) Venn diagram present B-ALL cells from co-culture and B-ALL cells from xenografts share similar nonsynonymous SNP profiles. (JPG 1513 kb)