Mice humanised by allogeneic CD34+ umbilical cord cells or supported by allogeneic CD14+ monocytes as T-cell allo-stimuli (Bagnara et al., 2011) were injected with 15 CLL peripheral blood mononuclear cells (PBMCs) representing two broad biological CLL types characteristic of indolent and progressive stages of disease (Table S1). Here, CD34 is linked to B-cell chronic lymphocytic leukemia.