User blog comment:Temporaryeditor78/squadmate-mission matchups for maximum dialogue immersion/@comment-5503561-20120814163130/@comment-6104626-20130504142751

Temp I believe it's confirmed that you must do one or the other of the side-missions to get Cure-the-Genophage (Priority Tuchanka) to show up. So it will take two playthroughs :-)