Table 1.

Clonal chromosomal aberrations in the progeny of individual HSPC and CP.

	CP		HSPC
IR	—	2 Gy	—	2 Gy
# Colonies	6	37	6	20
# Clonal aberrations	0	3	0	2
% Aberrant colonies	0	8.1	0	10

Full karyotype analysis for each colony can be found in Supplementary table 1.

Table 1 presents summary of three independent sorting and karyotyping experiments using cord blood preparations from separate donors.

¹Clonal chromosomal aberration frequency (%) was calculated by dividing the number of

colonies that carried stable aberration by the total number of colonies analyzed from the same group

²Representative metaphases for each group can be found in Supplementary Figure 5.