Dahlberg, A
Brashem-Stein, C
Delaney, C
Bernstein, I D
Article History
Accepted: 6 June 2014
First Online: 6 June 2014
Competing interests
: The Fred Hutchinson Cancer Research Center holds a patent on ‘methods for immortalizing cells’ that covers the use of Notch ligand for expansion of hematopoietic stem cells. IDB is an inventor on this patent. The remaining authors declare no conflict of interest.