Table 2. Overview of transcript units identified in human RNA-Seq samples.

	Transcript Units		Breakdown by # of Exons
Category	Count	Fraction	Exons	Transcript Count	Fraction
Exon overlap with known gene	29,029	91.2%	2	9,546	32.9%
			3	4,414	15.2%
			>3	15,069	51.9%
Non-exon gene overlap, sense strand	475	1.5%	2	422	88.8%
			3	29	6.1%
			>3	24	5.1%
Non-exon gene overlap, antisense strand	1,055	3.3%	2	927	87.9%
			3	94	8.9%
			>3	34	3.2%
Intergenic	1,259	4.1%	2	1,040	82.6%
			3	168	13.3%
			>3	51	4.1%