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(A) Population purity of HSCs and MPPs. While the MPPs compartment consists of non-stem cells exclusively, the HSCs compartment is heterogeneous. (B) Example of a lineage tree. At each generation, dividing mother cells give rise to two daughter cells. The lifetime of the cells is linked to the length of the branches and time axis on the left. Cells that did not divide until the end of the observation time are labelled “Non-dividing”.
