URL	Title	Id
http://digfir-published.macmillanusa.com/lodish_animation/a0401_transcription_mech.html	Chapter 4. Basic Transcriptional Mechanisms	519bca41b11c0f1368000050
http://digfir-published.macmillanusa.com/lodish_animation/a0401_transcription_mech_dlap.xml	DLAP questions	519bca41b11c0f1368000050