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Stem cells are cells that have the capacity to self-renew by dividing and to develop into more mature, specialised cells. Stem cells can be unipotent, multipotent, pluripotent or totipotent, depending ...

How fetal and adult hematopoietic programs are organized in the embryo has remained a long-standing question. Using lineage tracing in mice, we identified a subset of specialized fetal blood ...