Table 2. The number of target RTs of 4 stroke-responsive piRNAs distributed in bases 1 to 1 million of the 20 autosomoal chromosomes.

Chromosome	piR-177729	piR-143106	piR-169523	piR-70903
	# of targets
1	0	0	0	0
2	0	0	13	0
3	6	14	14	20
4	13	0	14	21
5	0	0	0	0
6	0	0	0	0
7	9	17	23	20
8	0	9	0	20
9	0	24	24	20
10	15	11	13	14
11	0	18	25	22
12	12	18	18	19
13	0	12	0	0
14	0	0	0	20
15	7	28	31	15
16	17	9	21	13
17	14	14	22	16
18	0	17	21	17
19	16	13	19	20
20	0	18	20	20