. 2002 Sep 19;3(10):research0052.1–research0052.18. doi: 10.1186/gb-2002-3-10-research0052

Table 3.

Insertion of L1s into other repetitive elements in the human genome

	Percent of the pre-insertion loci	Percent of the draft genome sequence
SINEs	3%	13.1%
LINES	13.3%	20.4%
LTR elements	5%	8.3%
DNA elements	2.2%	2.8%
Satellite/centromeric	0.5%	ND

Repeat did not meet criteria^*	14%
Unique sequence	61%	55%
Total	99%	99.6

^*The following criteria had to be met in order for a repeat to have been considered a target for L1 insertion: its number of substitutions could be no more than 25% as reported by the RepeatMasker program, and it had to span at least half of the pre-insertion sequence analyzed.