Christ O, Lucke K, Imren S, Leung K, Hamilton M, Eaves A, Smith C, Eaves C. Improved purification of hematopoietic stem cells based on their elevated aldehyde dehydrogenase activity. Haematologica 2007; 92(9):1165-1172; https://doi.org/10.3324/haematol.11366.