RNA sequences that work as transcriptional activating regions. Saha S., Ansari A. Z., Jarrell K. A., Ptashne M. Nucleic Acids Res. 2003;31:1565–1570. doi: 10.1093/nar/gkg227.
Please note that the name of the third author was originally spelled incorrectly as Jarell. This has since been corrected online in order for the article to be found more easily.