Slotkin JR, Chakrabarti L, Dai HN, Carney RSE, Hirata T, Bregman BS, Gallicano GI, Corbin JG, Haydar TF. In vivo quantum dot labeling of mammalian stem and progenitor cells. Dev Dyn. 2007 Dec;236(12):3393-401. doi: 10.1002/dvdy.21235