A mystery

All of a sudden, my molecular work is not, well, working. My primers won't amplify. They were working great 2 months ago! I thought maybe my new samples wouldn't work but in half of my reactions, even my controls didn't work.
I don't know if that makes me feel better or worse about the situation.

Looks like I have a pre-Derby PCR re-do tomorrow....

Um, yeah. This doesn't help my conference decision making!