Project description:Gene Expression profiling of HSCs isolated at different stages of ontogeny to address correlation between gene expression and changes in DNA methylation Gene expression profiling of hematopoietic stem cells isolated from e14.5 fetal liver (lineage- ckit+ sca1+CD150+ CD48- Mac1+), 3 month old mice (lineage- ckit+ sca1+ CD34- Flk2-) and 25 month old mice (lineage- ckit+ sca1+ CD34- Flk2-)