You can count on this: barcoded hematopoietic stem cells.

Glimm, Hanno; Ball, Claudia R; von Kalle, Christof · Cell Stem Cell · 2011

editorial · Level V

Where this comes from

Abstract

Understanding how individual hematopoietic stem cells contribute to blood formation requires analysis at the single-cell level. Recently in Nature Biotechnology, Lu et al. (2011) tagged HSCs with unique molecular barcodes and used high-throughput sequencing to track their progeny after transplantation.