Table 1.

Metaphase chromosomal breakage analysis of primary fibroblasts

Sample	DEB dose (µg/ml)	Number of metaphases scored	Total number of breaks	Breaks per Cell
Fetal fibroblast 94–38	0	66	4	0.06
(FANCG−/−)	0.01	49	47	0.96
	0.1	1	5	5.00
FA 100166/1	0	52	15	0.29
(UBE2T−/−)	0.01	50	44	0.88
	0.05	50	101	2.02
	0.1	50	140	2.80
NL1433889	0	50	0	0.00
(normal control)	0.01	47	2	0.04
	0.1	47	7	0.15