Table 1.

Statistics of Alu elements sequenced

Alu sub family	Number of Alu elements in genome	Number of distinct Alu elements sequenced	Number of sequences generated	Precentage of sequences generateda
AluY	137 925	23 857	207 602	84.5
AluSc	49 325	1725	7365	3.0
AluSx	339 002	1438	2744	1.1
AluSg	81 915	1304	4381	1.8
AluYa_hb	9646	672	3494	1.4
AluJb	128 539	539	1044	0.4
AluJo	141 841	510	806	0.3
AluSq	94 487	450	926	0.4
AluSp	50 917	231	467	0.2
Others	147 375	452	1218	0.5
Total	1 180 972	31 178	230 047	93.6

^aThe percentage was calculated as the number of sequences from Alu subfamily divided by the total number of sequences mapped (245 825 sequence reads).

^bAluYa-h denotes the young AluY families: AluYa to AluYh.