S1 Fig. Sequence alignment of betacoronaviral Mᵖʳᵒ. Modified from an output from ESPript [36].

I gave him my word that I'd protect his children.

He scowled vacuously, keeping at bay a horrible enlightenment on the mechanism of effort, which must drive into being a resistance equal to itself.

Admittedly the scenario that it was an unholy alliance of numerous enemies of the Doctor and other alien races that had united to create the trap was rather fanboyish on Moffat's part, even though it was great to see them assembled together like that and showed just what a threat the universe was facing once such an alliance had been created.