Table 3.

proTRAC output and distribution of piRNAs from next-generation sequencing

Samples	proTRAC input	proTRAC output	Distribution of piRNAs
	Number of unique reads	Number of unique piRNAs	Repeat	Unannotated	Intron sense	Intron antisense	Exon sense	Exon antisense	snRNA	rRNA	miRNA	tRNA
PGCs	687544	92373	74337	14478	1961	866	524	121	50	22	13	1
Stage X	350113	12124	10925	925	194	63	13	1	0	2	0	1
GSCs	350647	4930	3116	1562	121	62	59	0	5	0	5	0
CEFs	159803	642	31	360	17	2	122	20	1	2	0	87