Table 1.

Predicted numbers of trappable genes per gene trap vector

Gene trap vector	Minimum expression levela	Predicted gene number		Predicted saturation (Nord et al. dataset) (%)
		Trappable	Untrappable
FlipRosaβgeo	22.88	5170	2265	69.5
eFlipRosaβgeo	9.95	5999	1436	80.7
FlipRosaβgeoa	14.71	5526	1909	74.3
eFlipRosaβgeoa	7.92	6278	1157	84.4

^aAbsolute gene expression values were obtained from the GEO series accession GSE8128 (http://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE8128).