Proc Natl Acad Sci U S A. 2012 Apr 23.

Muramoto T, Cannon D, Gierlinski M, Corrigan A, Barton GJ, Chubb JR.

Live imaging of nascent RNA dynamics reveals distinct types of transcriptional pulse regulation.

Pulses for developmental genes kept same properties upon induction, while pulses in housekeeping gene varied in duration, frequency, and intensity.