- David Russell: [intimidating] How many Microbiologists does it take to change a light bulb? Go on have a stab at it, how many, how many do you think?
- Stephen Ezard: I don't know.
- David Russell: Just the one. But you better ask quick, 'cause they're dropping like flies.
- Professor John Moreton: [lecturing] Close your eyes and relax. I want you to imagine that you are a nasty, virulent virus. Now, a quick look around the hall tells me that some of you will feign this easier than others.