The upstream 5′ splice site remains associated to the transcription machinery during intron synthesis oleh Yodfat Leader, Galit Lev Maor, Matan Sorek, Ronna Shayevitch, Maram Hussein, Ofir Hameiri, Luna Tammer, Jonathan Zonszain, Ifat Keydar, Dror Hollander, Eran Meshorer, Gil Ast