Table 2.

The total number of contigs expressed in the single tissue assemblies

tissue	total number of assembly contigs expressed	tissue specific contigs (number with τ ≥ 0.8)
brain	51,411	4,277 (212)
heart	58,988	939 (219)
kidney	44,367	2,223 (90)
liver	60,284	905 (89)
muscle	57,568	1,460 (221)
pancreas	58,098	1,441 (265)
skin	53,977	2,859 (746)
testes	44,463	5,980 (606)
total tissue specific contigs		20,084 (2,448)

Note that relatively few contigs were expressed at very high level in only one tissue (i.e. τ ≥ 0.8), the mean number of reads was 6 for contigs with τ < 0.8 and 25 for contigs with τ ≥ 0.8