Therefore, the GFP+ cells (hereafter referred to as HCMVGFP+) following RV-TB40-BACKL7-SE-EGFP infection represent productively infected cells, while the GFP− cells (hereafter referred to as HCMVGFP−) are enriched for ‘truly’ latently infected CD34+ cells. Here, CD34 is linked to infection.