From: Bidirectional promoters are the major source of gene activation-associated non-coding RNAs in mammals
Transcribed regions
Unidirectionally transcribed regionsa
Bidirectionally transcribed regionsb
Cerebral cortex
25.0%
24.3%
0.7%
Cerebellum
30.0%
28.7%
1.3%
Heart
21.6%
20.9%