Table 2.

Competitive mobilization in mice transplanted with equal number of young and old BM cells

	Contribution to PB before mobilization, %	Contribution to CFCs after mobilization, %
Aged cells	31 ± 2	85 ± 1
Young cells	69 ± 2	15 ± 1

Aged was defined as 26 months; young, as 2 months. Contribution of aged and young BM cells to PB before mobilization and of CFCs derived from aged and young cells to PB after mobilization, analyzing at least 50 CFCs per recipient. Data are derived from 3 recipient animals that underwent competitive transplantation with BM cells pooled from 3 donors each. Values shown are mean± 1 SEM.