In contrast to what might be expected, MHC class I-deficient mice are not autodestructive.

In the prison of the 'tween decks reigned a darkness pregnant with murmurs. The sentry at the entrance to the hatchway was supposed to prevent the prisoners from making a noise, but he put a very liberal interpretation upon the clause, and so long as the prisoners refrained from shouting, yelling, and fighting--eccentricities in which they sometimes indulged--he did not disturb them.

He suspects it was an altogether different virus the second time round (but that's also unproveable).

After the long voyage, the customs officers rummaged the ship.