CD34 positive PBPC expanded ex vivo may not provide durable engraftment following myeloablative chemoradiotherapy regimens. - Holyoake, T L; Alcorn, M J; Richmond, L; Farrell, E; Pearson, C; Green, R; Dunlop, D J; Fitzsimons, E; Pragnell, I B; Franklin, I M (Bone Marrow Transplantation, 1997)